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Safety Valve

Safety Valve

Category

Browse our high-performance industrial valves engineered for excellence.

Unexpected pressure increases can put pipelines, boilers, pressure vessels, and connected equipment at risk if they are not relieved in time. A safety valve manufacturer in USA provides an automatic way to release excess pressure before it reaches an unsafe level. Once the system pressure drops back to an acceptable range, the valve closes again and restores normal operation.

 Unlike a normal isolation or control valve, a safety valve remains closed during normal operation and is required to respond when a predetermined set pressure is reached. For steam and compressible-fluid applications, spring-loaded designs typically open rapidly to provide the required relieving capacity.

What Determines Safety Valve Performance?

Set Pressure 

The predetermined pressure at which the safety valve begins to open and relieve excess pressure .

Overpressure

The pressure increase above set pressure enables the valve to achieve its specified relieving capacity.

Blowdown

The difference between the opening pressure and the pressure at which the valve closes and reseats.

Backpressure

Pressure at the valve outlet can influence opening, capacity and reseating depending on the valve design.


Types Of Safety Valve

SVR Global provides a range of safety-valve configurations for different overpressure scenarios and process conditions.

·        Conventional Safety Valve

·        Bellow Safety Valve

·        Pilot Operated Safety Valve

·        Pressure Safety Valve

·        Steam Safety Valve

·        Thermal Safety Valve

Safety Valve Specifications

Specification

Available Configuration

Size Range

DN15-DN350

Pressure Rating

PN16-PN64; ASME Class 150-2500

Material

Carbon Steel, Low-Temperature Carbon Steel, Alloy Steel, Stainless Steel

Grades

ASTM A216 WCB/WCC; ASTM A105; ASTM A350 LF2; ASTM A352 LCB/LCC; ASTM A217 WC6/WC9; ASTM A351 CF8/CF8M

End Connections

Flanged, RF, RTJ, Threaded/NPT, Socket Weld, Butt Weld

Service Media

Steam, Air, Gas, Liquid

Standards

ASME BPVC Section I, ASME BPVC Section VIII, API 520, API 521, API 526, API 527, ASME B16.5

Industries Using Safety Valves

• Oil & Gas

• LNG & Gas Processing

• Refining & Petrochemical

• Marine & Offshore

• Power Generation

• Industrial Steam Systems

• Chemical Processing

• Process Manufacturing



Showing all 6 products

Conventional Safety Valve

Conventional Safety Valve

Conventional Safety Valve Body: WCB, A105, WC6, CF8M, LCB, LF2 Disc: Stainless Steel Spring: Alloy Steel, Inconel, Monel, SS304 Bonnet: WCB, SS304, SS316 O Ring: VITON Guide: SS304, SS316 Bellows: WCB, SS304, SS316 Nominal Size: DN15 to DN200 Nominal Pressure: PN 16 to PN40, Class150 to Class1500 Dimension Size D D1 D2 b t Z-фd D` D1` D2` b` t Z`- фd` L L1 H ½”×3/4″ 89 60.5 35 12 5 4-ф15 98 70 43 14 1.6 4-ф15 90 90 260 3/4″×1″ 98 70 43 14 5 4-ф15 108 79.5 51 15 1.6 4-ф15 92 92 280 1″×1 ½” 108 79.5 51 15 5 4-ф15 127 98.5 73 18 1.6 4-ф15 105 105 290 1″×2″ 108 79.5 51 15 5 4-ф15 152 120.5 92 18 1.6 4-ф19 105 105 290 1 1/2″×2″ 127 98.5 73 18 5 4-ф15 152 120.5 92 18 1.6 4-ф19 124 124 320 1 1/2″×2 ½” 127 98.5 73 18 5 4-ф15 178 139.5 105 20 1.6 4-ф19 124 124 340 1 1/2″×3″ 127 98.5 73 18 5 4-ф15 178 139.5 105 20 1.6 4-ф19 130 130 340 2″×2 ½” 152 120.5 92 18 5 4-ф19 190 152.5 127 22 1.6 4-ф19 130 130 360 2″×3″ 152 120.5 92 18 5 4-ф19 190 152.5 127 22 1.6 4-ф19 130 130 360 2 1/2″×4″ 178 139.5 105 20 5 4-ф19 229 190.5 157 24 1.6 8-ф19 137 137 360 3″×4″ 190 152.5 127 22 5 4-ф19 229 190.5 157 24 1.6 8-ф19 156 156 450 4″×6″ 229 190.5 157 24 10 8-ф19 279 241.5 216 26 1.6 8-ф22 197 197 510 6″×8″ 279 241.5 216 26 10 8-ф22 343 298.5 270 29 1.6 8-ф22 240 240 740 8″×10″ 343 298.5 270 29 10 8-ф22 406 362 324 31 1.6 12-ф25 279 276 810

DETAILS
Pilot Operated Safety Valve

Pilot Operated Safety Valve

Pilot Operated Safety Valve Body: A216 WCB, A351 CF8, A351 CF8M Disc: SS304, SS316 Spring: Alloy Steel, Inconel, Monel, SS304 Bonnet: A216 WCB, A351 CF8, A351 CF8M O Ring: VITON Guide: SS304, SS316 Pilot: A216 WCB, SS304, SS316 Nominal Size: DN25 to DN300 Nominal Pressure: Class 150 to Class 1500 Dimension Size L L1 C 1″×2″ 115 105 106 1 ½”×2″ 121 124 432 1 ½”×3″ 124 130 457 2″×3″ 130 130 457 3″×4″ 156 156 483 4″×6″ 229 181 559 6″×8″ 240 240 635 8″×10″ 279 276 711

DETAILS
Bellow Safety Valve

Bellow Safety Valve

Bellow Safety Valve Body: A216 WCB, A351 CF8, A351 CF8M Disc: 2Cr13, SS304, SS316 Spring: Alloy Steel, Inconel, Monel, SS304 Bonnet: A216 WCB, A351 CF8, A351 CF8M O Ring: VITON Guide: SS304, SS316 Bellows: A216 WCB, SS304, SS316 Nominal Size: DN25 to DN200 Nominal Pressure: Class150 to Class2500 Dimensions Size D D1 D2 b t Z-фd D` D1` D2` b` t Z`- фd` L L1 H ½”×3/4″ 89 60.5 35 12 5 4-ф15 98 70 43 14 1.6 4-ф15 90 90 340 3/4″×1″ 98 70 43 14 5 4-ф15 108 79.5 51 15 1.6 4-ф15 96 92 350 1″×1 ½” 108 79.5 51 15 5 4-ф15 127 98.5 73 18 1.6 4-ф15 115 105 360 1″×2″ 108 79.5 51 15 5 4-ф15 152 120.5 92 18 1.6 4-ф19 115 105 360 1 1/2″×2″ 127 98.5 73 18 5 4-ф15 152 120.5 92 18 1.6 4-ф19 121 124 380 1 1/2″×2 ½” 127 98.5 73 18 5 4-ф15 178 139.5 105 20 1.6 4-ф19 121 124 390 1 1/2″×3″ 127 98.5 73 18 5 4-ф15 178 139.5 105 20 1.6 4-ф19 124 130 390 2″×2 ½” 152 120.5 92 18 5 4-ф19 190 152.5 127 22 1.6 4-ф19 124 130 410 2″×3″ 152 120.5 92 18 5 4-ф19 190 152.5 127 22 1.6 4-ф19 124 130 410 2 1/2″×4″ 178 139.5 105 20 5 4-ф19 229 190.5 157 24 1.6 8-ф19 143 137 410 3″×4″ 190 152.5 127 22 5 4-ф19 229 190.5 157 24 1.6 8-ф19 162 156 480 4″×6″ 229 190.5 157 24 10 8-ф19 279 241.5 216 26 1.6 8-ф22 210 197 560 6″×8″ 279 241.5 216 26 10 8-ф22 343 298.5 270 29 1.6 8-ф22 241 240 790 8″×10″ 343 298.5 270 29 10 8-ф22 406 362 324 31 1.6 12-ф25 279 276 840

DETAILS
Thermal Safety Valve

Thermal Safety Valve

Thermal Safety Valve Body: Carbon Steel, Cast Iron, Stainless Steel Nozzle: Stainless Steel Adjusting Ring: Steel Disc: Stainless Steel Guide Sleeve: Stainless Steel Bonnet: Carbon Steel Spring: Steel Stem: SS304, SS316 Adjusting Bolt: Steel Cap: Carbon Steel Working Pressure: PN1.6, PN2.5, PN4.0, Class 150 to Class 300 End Connection: NPT, RF, RTJ Design and Manufacture Standard: ASME 25.3, API 520, API 521, API 526, API 527 Face to Face Dimension: ASME B16.10, EN558-1, DIN 3202 End Connection Dimension: ASME B16.5, DIN 2543, DIN 2545, EN 12627 Test Standards: API 598, DIN 323 Dimensions DN do Rc L L1 G H 15 10 1/2″ 37 65 3/4″ 196 20 12 3/4″ 40 70 1″ 215 25 15 1″ 45 78 1 1/4″ 234 32 20 1 1/4″ 55 90 1 1/2″ 302 40 25 1 1/2″ 67 105 2″ 326 50 32 2″ 76 115 2 1/2″ 348 65 40 2 1/2″ 110 145 3″ 370 80 50 3″ 110 145 4″ 410

DETAILS
Pressure Safety Valve

Pressure Safety Valve

Pressure Safety Valve Body: WCB, WCC, SS304, SS316 Stem: Stainless Steel Bonnet: WCB Seat Ring: Stainless Steel Adjusting Ring: Stainless Steel Cover: Stainless Steel Valve guide: Stainless Steel Spring: Steel Nominal Size: DN15 to DN350 Nominal Pressure: PN16 to PN64, Class150 to Class600 End Connection: Flanged Dimensions Class 150 DN D D1 D2 b t Z-Φd DN’ D’ D1′ D2′ b’ t’ Z’-Φd’ L L1 H 1/2″x3/4″ 89 60.5 35 12 5 4-15 20 98 70 43 14 1.6 4-15 90 90 290 3/4″x1″ 98 70 43 14 5 4-15 25 108 79.5 51 15 1.6 4-15 96 92 310 1″x11/2″ 108 79.5 51 15 5 4-15 40 127 98.5 73 18 1.6 4-15 115 105 320 1″x2″ 108 79.5 51 15 5 4-15 50 152 120.5 92 18 1.6 4-19 115 105 320 11/2″x2″ 127 98.5 73 18 5 4-15 50 152 120.5 92 18 1.6 4-19 121 124 350 11/2″x21/2″ 127 98.5 73 18 5 4-15 65 178 139.5 105 20 1.6 4-19 121 124 360 11/2″x3″ 127 98.5 73 18 5 4-15 65 178 139.5 105 20 1.6 4-19 124 130 360 2″x21/2″ 152 120.5 92 18 5 4-19 80 190 152.5 127 22 1.6 4-19 124 130 380 2″x3″ 152 120.5 92 18 5 4-19 80 190 152.5 127 22 1.6 4-19 124 130 380 21/2″x4″ 178 139.5 105 20 5 4-19 100 229 190.5 157 24 1.6 8-19 143 137 380 3″x4″ 190 152.5 127 22 5 4-19 100 229 190.5 157 24 1.6 8-19 162 156 480 4″x6″ 229 190.5 157 24 10 8-19 150 241.5 241.5 216 26 1.6 8-22 210 197 540 6″x8″ 279 241.5 216 26 10 8-22 200 298.5 298.5 270 29 1.6 8-22 241 240 760 8″x10″ 343 298.5 270 29 10 8-22 250 362 324 324 31 1.6 12-25 279 276 830 12″x14″ 483 432 381 32 10 12-25 350 476 413 413 35 1.6 12-25 370 370 890

DETAILS
Steam Safety Valve

Steam Safety Valve

Steam Safety Valve Body: Carbon Steel, Stainless Steel, Ductile Iron, Cast Iron Bonnet: Carbon Steel, Stainless Steel, Ductile Iron, Cast Iron Disc: Stainless Steel Nozzle: Stainless Steel Adjust Ring: Stainless Steel Guide Sleeve: Stainless Steel Cap: Carbon Steel Nominal Diameter: DN15 to DN200 Nominal Pressure: PN16 to PN64, Class 150 to Class2500 End Connection: Flanged Dimension PN16 Unit: mm DN D D1 D2 b t Z-фd DN´ D´ D1´ D2´ b´ t Z´-фd´ L L1 H 15*20 89 60.5 35 12 5 4-ф15 20 98 70 43 14 1.6 4-ф15 90 90 290 20*25 98 70 43 14 5 4-ф15 25 108 79.5 51 15 1.6 4-ф15 96 92 310 25*32 108 79.5 51 15 5 4-ф15 32 127 98.5 73 18 1.6 4-ф15 115 105 320 25*50 108 79.5 51 15 5 4-ф15 40 152 120.5 92 18 1.6 4-ф15 115 105 320 40*50 127 98.5 73 18 5 4-ф15 50 152 120.5 92 18 1.6 4-ф15 121 124 350 40*65 127 98.5 73 18 5 4-ф15 50 178 139.5 105 20 1.6 4-ф15 121 124 360 40*80 127 98.5 73 18 5 4-ф15 65 178 139.5 105 20 1.6 4-ф15 124 130 360 50*65 152 120.5 92 18 5 4-ф19 65 190 152.5 127 22 1.6 4-ф19 124 130 380 50*80 152 120.5 92 18 5 4-ф19 80 190 152.5 127 22 1.6 4-ф19 124 130 380 65*100 177 139.5 105 20 5 4-ф19 80 229 190.5 157 24 1.6 4-ф19 143 137 380 80*100 190 152.5 127 22 5 4-ф19 100 229 190.5 157 24 1.6 4-ф19 162 156 480 100*150 229 190.5 157 24 10 8-ф19 100 279 241.5 216 26 1.6 8-ф19 210 197 540 150*200 279 241.5 216 26 10 8-ф22 150 343 298.5 270 29 1.6 8-ф22 241 240 760 200*250 343 298.5 270 29 10 8-ф22 200 406 362 324 31 1.6 8-ф22 279 279 830  

DETAILS
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