https://specijalna-oprema.hr/safety-relief-valves en hrvoje@wmd.hr Copyright 2018 2018-10-03T07:56:57+00:00 https://specijalna-oprema.hr/safety-relief-valves/pilot-operated-safety-relief-valve-type-svp-p https://specijalna-oprema.hr/safety-relief-valves/pilot-operated-safety-relief-valve-type-svp-p#When:07:56:57Z Pilot-operated safety relief valve type SVP-P   DN 50 - 150   PN 16 - 64   ANSI 150 - 600lb   pmax 50 bar   t -20°C / +90°C   acceptable media natural gas, LPG, air, non-aggressive gasses   connections ANSI B 16.5, EN1092, DIN2633, DIN2634     APPLICATION A pilot-operated pressure relief valve SVP-P is a pressure relief valve in which the major relieving device is combined with, and is controlled by, a self-actuated auxiliary pilot.   It’s designed to be used wherever there is a need to exhaust the overpressure volume of gas.   Applications include gas production systems, compressor stations, gas transmission (pipelines) facilities, storage systems, distribution systems and in all types of processing plants.   DESIGN FEATURES SVP-P soft seat pilot-operated safety relief valves operate on the principle of unequal areas exposed to the same pressure.  When the relief valve is closed, system pressure pushes upwards against the piston seat seal on an area equal to the inside diameter of the seat. Simultaneously, the same system pressure passes through the pilot, exerting a downward force on the piston acting on an area approximately 50% greater than the inside diameter of the seat. The resulting differential force holds the valve tightly closed. As the system pressure rises, the force against the piston seal increases.   When the system pressure reaches the relief valve discharge set pressure , the pilot cuts off system pressure and opens the top of the piston to vent pressure, the pilot valve discharge the chamber of the main valve (releasing pressure) and the main valve opens completely (h=D)   When the predetermined blowdown pressure is reached (93-97,5% of set pressure), the pilot shuts off the exhaust and reopens the flow of system pressure to the top of the piston with higher presure value, which effectively close the relief valve.   Therefore, the basic advantage of the pilot operated safety relief valve is that it, when coming closer to the pre-set discharge pressure, force increases and seat-tightness is better. With the conventional valve it is the opposite – when coming close to the opening pressure, valve starts gradually to release. This valve can be operated in applications with a back pressure ratio of up to 70% which makes it ideal for a non stabile systems.   Flange dimensions can be modified on request to fit most existing installations. This permits SVP-P pilot-operated safety relief valve to be used as replacements for older spring-loaded valves which may not conform to new safety standards.   PILOT This pilot has a fixed blowdown for controlling relief valve opening and closing pressure set points. The opening set pressure is determined by the force of a control spring, which holds the relief control section of the valve closed. When system pressure acting on the relief control valve seat area equals the spring force, the relief line opens, and the blowdown control section closes, blocking system pressure from passing into the chamber above the main valve piston. As the relief line opens, the pressure underneath the control seat is exposed to a larger pressure area which emidiatelly makes the control pilot to quickly reduce pressure in the piston area.   This pressure reduction causes the main valve piston to lift, relieving system pressure. After the system pressure is reduced to a point determined by the control spring, the relief control valve closes, and the open blowdown line valve allows system pressure to re-enter the piston area, forcing the main piston down to a closed valve position.   ON REQUEST: - In addition to the various API orifice sizes, on request it can be delivered with non-standard API orifice sizes for maximum flow capacity. - Flange dimensions can be modified on request to fit most existing installations. This permits SVP-P pilot-operated safety relief valve to be used as replacements.   APPLIED STANDARDS, CODES & DIRECTIVES API 526 “Flanged steel pressure relief valves” EN ISO 4126-4 “Safety devices for protection against excessive pressure -Pilot operated safety valves” 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres”     Pos. Part name Material Standard 1 Housing WCB   2 Nozzle P265GH EN10273 3 Pipe P235GH EN10216-2 4 Seat CC333G EN1982 5 Gasket NBR   6 Spring 1.4301 EN10270-3 7 Piston CC333G EN1982 8 Seal PTFE   9 “O” ring NBR   10 Pilot   SPO 11 Lid P265GH EN10028-2 12 Pipe P235GH EN10216-2   CODE DN1 DN2 L (mm) L1 (mm) H (mm) set pressure (bar) WEIGHT(kg) 031001 50 (2”) 80 (3”) 150 202 308 16 - 50 22 031002 80 (3”) 100 (4”) 173 222 318 16 - 50 33 031003 100 (4”) 150 (6”) 206 268 350 16 - 50 55     2018-10-03T07:56:57+00:00 https://specijalna-oprema.hr/safety-relief-valves/pilot-operated-safety-relief-valve-type-svn-p https://specijalna-oprema.hr/safety-relief-valves/pilot-operated-safety-relief-valve-type-svn-p#When:07:32:58Z Pilot-operated safety relief valve type SVN-P   DN 1” - 2”   PN 250   ANSI 1500lb   pmax 210 bar   t -20°C / +90°C   acceptable media natural gas, air, non-aggressive gasses   connections ANSI B1 20.1     APPLICATION A pilot-operated pressure relief valve SVP-N is a pressure relief valve in which the major relieving device is combined with, and is controlled by, a self-actuated auxiliary pilot.   It’s designed to be used wherever there is a need to exhaust the overpressure volume of gas.   Applications include gas production systems, compressor stations, gas transmission (pipelines) facilities, storage systems, distribution systems and in all types of processing plants.   DESIGN FEATURES SVN-P soft seat pilot-operated safety relief valves operate on the principle of unequal areas exposed to the same pressure. When the relief valve is closed, system pressure pushes upwards against the piston seat seal on an area equal to the inside diameter of the seat. Simultaneously, the same system pressure passes through the pilot, exerting a downward force on the piston acting on an area approximately 50% greater than the inside diameter of the seat. The resulting differential force holds the valve tightly closed. As the system pressure rises, the force against the piston seal increases.   When the system pressure reaches the relief valve discharge set pressure , the pilot cuts off system pressure and opens the top of the piston to vent pressure, the pilot valve discharge the chamber of the main valve (releasing pressure) and the main valve opens completely (h=D).When the predetermined blowdown pressure is reached (93-97,5% of set pressure), the pilot shuts off the exhaust and re-opens the flow of system pressure to the top of the piston with higher pressure value, which effectively close the relief valve.   Therefore, the basic advantage of the pilot operated safety relief valve is that it, when coming closer to the pre-set discharge pressure, force increases and seat-tightness is better. With the conventional valve it is the opposite – when coming close to the opening pressure, valve starts gradually to release. This valve can be operated in applications with a back pressure ratio of up to 70% which makes it ideal for a non stabile systems.   Flange dimensions can be modified on request to fit most existing installations. This permits SVP-P pilot-operated safety relief valve to be used as replacements for older spring-loaded valves which may not conform to new safety standards   PILOT This pilot has a fixed blowdown for controlling relief valve opening and closing pressure set points. The opening set pressure is determined by the force of a control spring, which holds the relief control section of the valve closed. When system pressure acting on the relief control valve seat area equals the spring force, the relief line opens, and the blowdown control section closes, blocking system pressure from passing into the chamber above the main valve piston. As the relief line opens, the pressure underneath the control seat is exposed to a larger pressure area which emidiatelly makes the control pilot to quickly reduce pressure in the piston area.   This pressure reduction causes the main valve piston to lift, relieving system pressure. After the system pressure is reduced to a point determined by the control spring, the relief control valve closes, and the open blowdown line valve allows system pressure to re-enter the piston area, forcing the main piston down to a closed valve position.   APPLIED STANDARDS, CODES & DIRECTIVES ISO 4126-4 “Safety devices for protection against excessive pressure -Pilot operated safety valves” 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres”   Pos. Part name Material Standard 1 Seat housing P265GH EN10273 2 Seat CC333G EN1982 3 Pipe P235GH EN10216-2 4 “O” ring NBR   5 Pipe P235GH EN10216-2 6 Piston CC333G EN1982 7 Spring 1.4301 EN10270-3 8 Seal PTFE   9 Guide CC333G EN1982 10 Upper housing P265GH EN10273 11 Lid P265GH EN10028-2 12 Pipe P235GH EN10216-2   CODE DN1 DN2 L (mm) L1 (mm) H (mm) set pressure (bar) WEIGHT(kg) 031201 1” NPT 2” 100 228 390 25 - 210 7.5 031202 1 1/2“ NPT 2” 100 228 390 25 - 210 7.5     2018-10-03T07:32:58+00:00 https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-type-svop-k https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-type-svop-k#When:07:13:53Z Safety relief valve type SVOP-K   DN 40 - 100   PN 16, 25, 40   ANSI 150lb, 300lb   p 1 - 25 bar   t -20°C / +90°C   acceptable media oil, petrol, natural gas, water, LPG   connections EN1092, DIN2633-2635, ANSI B 16.5   APPLICATION Safety relief valve SVOP-K is used for relieving pressure of system in which is beeing installed. It’s simplicity and reliability makes it perfect safety valve for almost every system or fluid.   Accuracy and valve performance stays permanent even on heavy duty demands. Due to simple design makes it easy to perform service and calibration.   DESIGN FEATURES Safety relief valve SVOP-K is angled type of valve, with thread end connection for exhaust pipeline. It automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures.   Safety valve acts directly according to the developed force, as a result of gas pressure on the plate the set force of the spring is resised. With the adequate increase of pressure, the seat is lifted up to max. 1/4 seat diameter and with this the exiting conduit is opened.   ON REQUEST: - special “PP” design for back pressure applications - connections specified by customer - every part can be produce to meet customer specification requirements - special modification for aggressive media   TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory   APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves” EN 12516-3 “Valves-Shell design strenght. Experimental method” EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres” 97/23 EC (PED) “Pressure equipment directive”   Pos. Part name Material Standard 1 Lower housing GJS-400-15 EN1563 2 Seat CW614N EN12164 3 “O” ring FKM, NBR   4 Gasket FKM, NBR   5 Plate S355 EN10277-2 6 Plate holder 1.4301 EN10088-3 7 Mid-plate CW614N EN12164 8 “O” ring FKM, NBR   9 Gasket tesnit   10 Upper housing GJS-400-15 EN1563 11 Spring plate S355 EN10277-2 12 Spring SH EN10270-1 13 Spindle 1.4301 EN10088-3 14 Spring plate S355 EN10277-2 15 Adjusting screw CW614N EN12164 16 Nut CW614N EN12164 17 Bonnet GJS-400-15 EN1563   CODE DN L (mm) L1 (mm) H (mm) WEIGHT(kg) 030603 40 (1 1/2“) 115 115 601 12 030604 50 (2”) 125 125 611 13 030605 65 (2.5”) 145 145 642 20 030607 80 (3”) 155 155 705 31 030608 100 (4”) 175 175 737 35   2018-10-03T07:13:53+00:00 https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-type-uts-101 https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-type-uts-101#When:06:29:06Z Safety relief valve type UTS-101   DN 1/2” - 6/4”   PN 250    p 1 - 25 bar   t -80°C / +380°C   acceptable media oil, petrol, natural gas, water, steam, LPG   connections ISO 7-1, ANSI B1 20.1     APPLICATION Safety relief valve UTS-101 is used for relieving pressure of system in which is beeing installed. It’s simplisity and reliability makes it perfect safety valve for almost every system or fluid.   Accuracy and valve performance stays permanent even on heavy duty demands. Due to simple design makes it easy to perform service and calibration.   DESIGN FEATURES “Safety relief valve UTS-101 is angled type of valve, with thread end connection for exhaust pipeline. It automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures.”   “Safety valve acts directly according to the developed force, as a result of gas pressure on the plate the set force of the spring is resised. With the adequate increase of pressure, the seat is lifted up to max. 1/4 seat diameter and with this the exiting conduit is opened.”   ON REQUEST: - special ”PP” design for back pressure applications - connections specified by customer - every part can be produce to meet customer specification requirements - special modification for aggressive media   TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory   APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves” EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres” ASME VIII - “Boiler and pressure vessel code”   Pos. Part name Material Standard     WCB CF8M 1 LOWER BODY 1.4404 1.4404 2 UPPER BODY 1.0619 1.4408 3 BONNET 1.0619 1.4408 4 CAP 1.0619 1.4408 5 GUIDE 1.0569 1.4404 6 DISC WING 1.4122 1.4404 7 DISC 1.4122 1.4404 8 SPINDLE 1.4021 1.4404 9 RING 1.0569 1.4404 10 SPRING HOLDER 1.0569 1.4404 11 SPRING 1.4310 1.4310 12 ADJUSTING SCREW 1.0569 1.4404 13 NUT 1.0569 1.4404   CODE DN1 DN2 L (mm) L1 (mm) H (mm) Diameter WEIGHT(kg) 130201 1/2” 1/2”, 3/4” 48 62 275 46 2.7 130202 3/4” 3/4”, 1” 48 62 275 46 2.7 130203 1” 1”, 5/4” 63 69 296 64 3.9 130204 5/4” 5/4”, 6/4” 63 69 296 64 3.9 130209 6/4” 6/4” 63 69 296 64 3.9   2018-10-03T06:29:06+00:00 https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-type-svon https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-type-svon#When:06:01:02Z Safety relief valve type SVON   DN 1/2” - 1 1/2”   PN 25   p 1 - 25 bar   t -20°C / +180°C   acceptable media oil, petrol, natural gas, water, steam, LPG   connections ISO 7-1, ANSI B1 20.1     APPLICATION Safety relief valve SVON is used for relieving pressure of system in which is being installed. It’s simplicity and reliability makes it perfect safety valve for almost every system or fluid.   Accuracy and valve performance stays permanent even on heavy duty demands. Due to simple design makes it easy to perform service and calibration.   DESIGN FEATURES “Safety relief valve SVON is angled type of valve, with thread end connection for exhaust pipeline. It automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures.”   “Safety valve acts directly according to the developed force, as a result of gas pressure on the plate the set force of the spring is resised. With the adequate increase of pressure, the seat is lifted up to max. 1/4 seat diameter and with this the exiting conduit is opened.”     ON REQUEST: - special ”PP” design for back pressure applications - connections specified by customer - every part can be produce to meet customer specification requirements - special modification for aggressive media   TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory   APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves” EN 12516-3 “Valves-Shell design strenght. Experimental method” EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres” 97/23 EC (PED) “”Pressure equipment directive”   Pos. Part name Material Standard 1 Seat 1.4301 EN10088-3 2 Lower housing GJS-400-15 EN1563 3 Plate 1.4301 EN10088-3 4 “O” ring FKM   5 Plate holder CW614N EN12164 6 Guide CW614N EN12164 7 Spring plate CW614N EN12164 8 Spindle 1.4301 EN10088-3 9 Spring SH EN10270-1 10 Upper housing GJS-400-15 EN1563 11 Lever ST02Z275 DIN59232 12 Nut CW614N EN12164 13 Adjusting screw CW614N EN12164 14 Bonnet GJS-400-15 EN1563 15 “O” ring NBR   16 Eccentric shaft 1.4301 EN10088-3 17 Guide nut CW614N EN12164   CODE DN1 DN1 L (mm) L1 (mm) H (mm) Diameter WEIGHT(kg) 030201 1/2” 1/2”, 3/4” 48 49 274 36 2.4 030202 3/4” 3/4”, 1” 48 49 274 36 2.4 030203 1” 1”, 1 1/4“ 63 67 307 50 3.2 030204 1 1/4“ 1 1/4“, 1 1/2“ 63 67 307 50 3.2 030209 1 1/2“ 1 1/2“ 63 67 307 60 3.3   2018-10-03T06:01:02+00:00 https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-for-lpg-type-svn https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-for-lpg-type-svn#When:05:45:43Z Safety relief valve for LPG type SVN   DN 1/2” - 1 1/4“”   PN 25   p 1 - 25 bar   t -20°C / +90°C   acceptable media propane, butane, LPG, natural gas   connections ANSI B1 20.1, ISO 7-1     APPLICATION “Safety relief valve SVN is primary designed for instalation on propane, butane and LPG storage vessels, although it can be equally efficient installed on all other gas instalations” High discharge flow makes this valve ideal for a quick overpressure relief caused by temperature increase DESIGN FEATURES “Safety relief valve SVN is verticaly straight exhaust type of valve, with thread end connection for exhaust pipeline. It automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures.”   “Safety valve SVN acts directly according to the developed force, as a result of gas pressure on the plate the set force of the spring is resised. With the adequate increase of pressure, the seat is lifted up to max. 1/4 seat diameter and with this the exiting conduit is opened.”   TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory   APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 ”Safety devices for protection against excessive pressure. Safety valves” EN 12516-3 ”Valves-Shell design strenght. Experimental method” EN 13463-1 ”Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 ”Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) ”Equipment and protective systems intended for use in potentially explosive atmospheres” 97/23 EC (PED) ”Pressure equipment directicve”   Pos. Part name Material Standard 1 Housing CW614N EN12164 2 Seal FKM   3 Plate CW614N EN12164 4 Spring 1.4301 EN10270-3 5 Adjusting screw CW614N EN12164   CODE DN1 DN2 L (mm) Diameter WEIGHT(kg) 030301 1/2”NPT 3/4” 67 30 2.3 030002 3/4”NPT 3/4” 100 36 2.3 030308 1”NPT 11/4“ 110 50 2.5 030312 1 1/4“NPT 1 1/2“ 160 60     2018-10-03T05:45:43+00:00 https://specijalna-oprema.hr/safety-relief-valves/diaphragm-safety-relief-valve-type-svm-p https://specijalna-oprema.hr/safety-relief-valves/diaphragm-safety-relief-valve-type-svm-p#When:12:17:12Z Diaphragm Safety relief valve type SVM-P   DN 32 - 100   PN 16   p 150lb   t -20°C / +60°C   acceptable gases natural gas, LPG, air, nitrogen, non-aggressive gasses   connections EN1092, DIN2633, ANSI B 16.5     APPLICATION Safety relief valve SVM-P is used downstream of pressure regulator to relief limited volumes of gas, and to avoid triggering safety shut-off valves. It’s ideal for low pressure and high flow settings due to high sensitivity provided by large diaphragm and flow area.   DESIGN FEATURES Safety relief valve SVM-P automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures. Safety valve acts directly according to the developed force, as a result of gas pressure on the diaphragm the set force of the spring is resised. With the adequate increase of pressure, the diaphragm is lowered and with this the plate and therefore the exiting conduit is opened.   TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory   APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves” EN 12516-3 “Valves-Shell design strenght. Experimental method” EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres”   Pos. Part name Material Standard 1 Lid ENAW6005 EN573 2 Housing GJS-400-15 EN1563 3 Seat CW614N EN12164 4 “O” ring FKM   5 “O” ring FKM   6 Plate S355 EN10277-2 7 Plate guide S355 EN10277-2 8 Spindle 1.4301 EN10088-3 9 Binding neck ENAW6005 EN573 10 Reinforced diaphragm panel ST02Z275 DIN59232 11 Lower diaphragm housing ENAW6005 EN573 12 Diaphragm NBR   13 Upper diaphragm housing ENAW6005 EN573 14 Spring housing ENAW6005 EN573 15 Spring SH EN10270-1 16 Adjusting screw CW614N EN12164 17 Bonnet ENAW6005 EN573   CODE DN L (mm) L1 (mm) H (mm) set pressure (mbar) 8-30    30-140   140-700 D (mm) WEIGHT(kg) 030101 32 (1 1/4“) 180 590 380 200 250 350 12 030102 40 (1 1/2“) 200 590 380 200 250 350 16 030103 50 (2”) 230 610 400 250 350 450 22 030104 65 (2.5”) 290 620 410 250 350 450 24 030105 80 (3”) 310 630 420 250 350 450 26 030106 100 (4”) 350 650 440 250 350 450 35 2018-10-02T12:17:12+00:00 https://specijalna-oprema.hr/safety-relief-valves/diaphragm-safety-relief-valve-type-svm-n https://specijalna-oprema.hr/safety-relief-valves/diaphragm-safety-relief-valve-type-svm-n#When:11:50:24Z Diaphragm Safety relief valve type SVM-N   DN 1/2” - 1”   PN 6, p 20 - 500mbar   t -20°C / +60°C   acceptable gases natural gas, LPG, air, nitrogen, non-aggressive gasses   connections ISO 7-1, ANSI B1 20.1     APPLICATION Safety relief valve SVM-N is used downstream of pressure regulator to relief limited volumes of gas, and to avoid triggering safety shut-off valves. It’s ideal for low pressure settings due to high sensitivity provided by large diaphragm area.   DESIGN FEATURES Safety relief valve SVM-N automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures. Safety valve acts directly according to the developed force, as a result of gas pressure on the diaphragm the set force of the spring is resised. With the adequate increase of pressure, the diaphragm is lowered and with this the plate and therefore the exiting conduit is opened.   TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory   APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves” EN 12516-3 “Valves-Shell design strenght. Experimental method” EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres”   Pos. Part name Material Standard 1 Bonnet ENAW6005 EN573 2 Adjusting screw CW614N EN12164 3 Spring SH EN10270-1 4 Lower housing ENAW6005 EN573 5 Screw 8.8 DIN912 6 Plate CW614N EN12164 7 Reinforced diaphragm NBR   8 “O” ring FKM   9 Seat CW614N EN12164 10 Uper housing ENAW6005     CODE DN L (mm) L1 (mm) H (mm) D (mm) WEIGHT(kg) 030001 1/2” 93 28 150 195 2.3 030002 3/4” 93 28 150 195 2.3 030003 1” 93 29 156 195 2.5   Discharge capacity at 10% overpressure in standard conditions (101325Pa, 15°C) set pressure (mbar) 20 50 100 200 400 500 capacity (m3/h) 23 25 28 45 51 65 2018-10-02T11:50:24+00:00 https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-for-air-type-svn-n https://specijalna-oprema.hr/safety-relief-valves/safety-relief-valve-for-air-type-svn-n#When:12:48:35Z Safety relief valve for air type SVN-N   DN 3/8” - 1 1/4“”   PN 25    p 1 - 25 bar   t -20°C / +90°C   acceptable media all non-aggressive gases   connections ISO 7-1, ANSI B1 20.1     APPLICATION Safety relief valve SVN-N is primary designed for instalation on air storage vessels, although it can be equally efficient installed on all other gas vessels and instalations.     DESIGN FEATURES Safety relief valve SVN-N is type of valve with no end connections, so the relieved gas goes right in to the atmosphere. This should be kept in mind if installed in explosive atmosphere. It automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures.   Safety valve SVN acts directly according to the developed force, as a result of gas pressure on the plate the set force of the spring is resised. With the adequate increase of pressure, the seat is lifted up to max. 1/4 seat diameter and with this the exiting conduit is opened.     TESTING & CALIBRATION EN ISO/IEC 17025 certified laboratory     APPLIED STANDARDS, CODES & DIRECTIVES EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves” EN 12516-3 “Valves-Shell design strenght. Experimental method” EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements” EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “ 94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres” 97/23 EC (PED) “Pressure equipment directive”     Pos. Part name Material Standard 1 Housing CW614N EN12164 2 Seal NBR, FKM   3 Plate CW614N EN12164 4 Spring plate CW614N EN12164 5 Spring 1.4301 EN10270-3 6 Spring housing CW614N EN12164 7 Adjusting screw CW614N EN12164 8 Spindle 1.4301 EN10088-3 9 Bonnet CW614N EN12164   CODE DN L (mm) Diameter WEIGHT(kg) 030303 3/8” 73 20 0.18 030310 1/4” 73 20 0.18 030304 1/2” 107 30 0.55 030305 3/4” 107 32 0.6 030306 1” 199 50 3.6 030307 1 1/4“ 199 50 3.6 2018-04-26T12:48:35+00:00