Type 646 Refrigeration
- Design: Enclosed Discharge
- Materials: Stainless
- Inlet Connections: 3/8” to 1 1/2” (depending on bore size)
- Pressure Range: 6.6 to 55.2 bar (depending on bore size)
Our Diverse Range of Safety Valves
With a wide range of bore sizes, material options (bronze, brass, or stainless steel), and connection types (threaded, flanged, or weld end), Seetru’s safety relief valves accommodate a wide spectrum of applications and pressure requirements, covering bores from 10mm to 30mm and temperatures up to 250°C. Whether protecting air/gas compressors, specialist gas plants, or medical gases. Our safety relief valves set the standard for reliability and safety across a wide range of industrial applications.
Same-Day Despatch
Our products are recognised globally for their exceptional quality and reliability, in recent years Seetru has worked hard to maximise the efficiency of our manufacturing processes, to ensure that we’re able to meet demands for supply and distribution. We now hold a large variety of safety valves in stock, allowing customers to purchase certain quantities from our website, and see them despatched on the same day.
Seetru Safety Relief Valves
Search the range of Seetru Safety Relief Valves. Use the filter to search by industry or application area, materials of construction, and by selecting the required set-pressure range (bar).
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LGS HI-FLOW
- Seetru LGS HI-FLOW Safety Relief Valves (Pressure Relief Valves) are suitable for Liquid, Gas and Steam applications
- Design: Enclosed Discharge. Larger Outlets to enable Larger Flow
- Materials: Bronze
- Inlet Connections: 1/2" to 2 1/2" BSP female connections
- Pressure Range: 0.2 to 24 bar
LGS Pressure Relief Valves
- Seetru LGS Safety Relief Valves (Pressure Relief Valves) are suitable for Liquid, Gas and Steam applications
- Design: Enclosed Discharge. Dual-guided spindle and the Seetru Rock-Seal™ Technology
- Materials: Bronze
- Inlet Connections: 1/2" to 2 1/2" BSP female connections (1/2" to 2" BSP for LGS HI-FLOW)
- Pressure Range: 0.2 to 24 bar
Type 936 Threaded
- Design: Enclosed Discharge
- Materials: Brass inlet with either Bronze or Stainless Steel body. Metal to metal sealing
- Inlet Connections: 1/2" to 2" BSP, BSPT or NPT
- Pressure Range: 0.3 to 28.0 bar
Type 946 Threaded
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connection: 1/2” to 2” threaded connections (depending on valve bore size)
- Pressure Range: 0.3 to 28.0 bar (depending on valve bore size)
Type 75008
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: 1/4” to 1/2”
- Pressure Range: 0.27 to 5.0 bar
Type 6L0
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: 1/2” to 1” TRI-CLAMP
- Pressure Range: 0.7 to 30.0 bar
Type 980 Threaded
- Stainless Steel
- Available with 10, 15, 20 & 25mm bore
- 1/2” to 2” threaded connections (depending on valve bore size)
- Pressure range: 0.3 to 36.0 bar (depending on valve bore size)
Type 970 Threaded
- Design: Enclosed Discharge
- Materials: Brass inlet with either a bronze or stainless steel body depending on the bore size. Stainless Steel Disc
- Inlet Connections: 1/2” to 2” threaded connections
- Pressure Range: 0.3 to 36.0 bar
Type 680
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: 3/8” to 2”
- Pressure Range: 0.7 to 30 bar
Type 670 / 690
- Design: Enclosed Discharge
- Bronze or Stainless Steel
- Inlet Connections: 3/8” to 2”
- 0.7 to 30.0 bar
Type 346 / 356
- Design: Enclosed Discharge
- Materials: Bronze or Stainless Steel
- Inlet Connections: 3/8” to 3/4”
- Pressure Range: 0.83 to 30.76 bar
Type 636 Refrigeration
- Design: Enclosed Discharge
- Materials: Bronze
- Inlet Connections: 3/8” to 1 1/2” (depending on bore size)
- Pressure Range: 6.6 to 55.2 bar (depending on bore size)
Type 319
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: 3/8” to 1/2” or 7/8” x 14UNF (depending on bore size)
- Pressure Range: 13.5 to 55.2 bar
Type 64613 / 64113 Flanged
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: DN20 (3/4”) or DN25 (1”) DIN or ANSI flanges
- Pressure Range: 0.32 to 49.0 bar
10mm Bore 98010 Flanged
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: DN15 (1/2), DN20 (3/4”) or DN25 (1”) flange – DIN EN1092 and ANSI flanges are available
- Pressure Range: : 0.3 to 33.0 bar (depending on bore size)
15mm Bore 94615 Flanged
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: : DN15 (1/2), DN20 (3/4”) or DN25 (1”) flange – DIN EN1092 and ANSI flanges are available
- Pressure Range: 0.3 to 28.0 bar
10mm Bore 94610 Flanged
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: DN15 (1/2), DN20 (3/4”) or DN25 (1”) flange – DIN EN1092 and ANSI flanges are available
- Pressure Range: 0.3 to 28.0 bar
15mm Bore 98015 Flanged
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: DN15 (1/2), DN20 (3/4”) or DN25 (1”) flange – DIN EN1092 and ANSI flanges are available
- Pressure Range: 0.3 to 33.0 bar (depending on bore size)
Type 94605/946H5/95605/956H5
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: ½” NPT, BSP & BSPT | 9/16” Cone & Thread | 3/4” Cone & Thread
- Pressure Range: 35.0 to 515 bar (9*605) / 35.0 to 1100 bar (9*6H5) *Maximum set pressure for steam is 85 bar
Type 6G6/6G1
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: 1/2” to 1” Tr-Clamp (depending on bore size)
- Pressure Range: 0.32 to 55.2 bar (depending on bore size) – Maximum 12 bar for Steam Applications
Type B4605/B6605/359
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: 3/8” and 1/2”
- Pressure Range: 35.0 to 500.0 bar
Type 329
- Design: Enclosed Discharge
- Materials: Bronze or Stainless Steel body
- Inlet Connections: 3/8” to 3/4” Threaded
- Pressure Range: 53.0 to 370.0 bar
Type 33110/34110/34410
- Design: Enclosed Discharge
- Materials: Brass or Stainless Steel body and Stainless Steel Inlets
- Inlet Connections: 3/8” to 1/2” Threaded Inlet Connections
- Pressure Range: 27 to 36 & 48.3 to 241.3 bar
Type 33020/34020/34320
- Design: Enclosed Discharge
- Materials: Brass or Stainless Steel body and Stainless Steel inlets
- Inlet Connections: 3/8” to 1/2” threaded
- Pressure Range: 55.0 to 103.4 bar
Type 86810
- Design: Enclosed Discharge
- Materials: Brass & PPS Plastic
- Inlet Connections: 1/2” to 3/4”
- Available Set Pressures: 7.0, 8.0, 9.3, 10.0, 10.5, 11.0, 11.5, 14.5 & 16.0 bar
Type 63608
- Design: Enclosed Discharge
- Materials: Brass & PPS Plastic
- Inlet Connection: 1/4" to 1/2"
- Pressure Range: 0.3 to 13.2 bar
Type 646/641
- Design: Enclosed Discharge
- Materials: Stainless Steel
- Inlet Connections: 3/8” to 2”
- Pressure Range: 6.6 to 55.2 bar
Types 636/631 & 656/651
- Design: Enclosed Discharge
- Materials: Bronze
- Inlet Connections: 3/8” to 2”
- Pressure Range: 0.32 to 55.2 bar
Type 55004
- Design: Atmospheric Discharge
- Materials: Brass & St. Steel
- Inlet Connections: 1/4” to 1/2”
- Pressure Range: 69.0 to 448.2 bar (3/8” and 1/2”) / 69.0 to 345.0 bar (1/4”)
Type 31210
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: 3/8” to ¾”
- Pressure Range: 20.6 to 134.5 bar
Type 31180
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: ¼” or 3/8”
- Pressure Range: 20.6 to 134.5 bar
Type 31140
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: 2” (or 2 ½” using adapter)
- Pressure Range: 2.8 to 9.4 bar (2.8 to 3.8, 4.3 to 4.5, 5.5 & 7.7 to 9.4 bar)
Type 106/116
- Design: Atmospheric Discharge
- Materials: Brass or Aluminium
- Inlet Connections: 1" to 2"
- Pressure Range: 0.5 to 12.0 bar
Type 74008
- Design: Atmospheric Discharge
- Materials: Stainless Steel
- Inlet Connection: 1/4" to 1/2”
- Pressure Range: 0.27 to 17.5 bar
Type 73008
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: ¼” to 1/2”
- Pressure Range: 0.27 to 17.5 bar
Type 616/611
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: ¼” to 2” (depending on bore size)
- Pressure Range: 2.0 to 55.0 bar (depending on bore size)
Type 848 / 841
- Design: Atmospheric Discharge
- Materials: Stainless Steel
- Inlet Connections: ¼” to 1/2”
- Pressure Range: 0.55 to 21.0 bar
Type 818 / 811
- Design: Atmospheric Discharge
- Materials: Brass
- Inlet Connections: ¼” to 1” (depending on bore size)
- Pressure Range: 0.48 to 50.9 bar (depending on bore size)
Seetru keeps a range of our most commonly used safety valves in stock, allowing customers to purchase them online, and see them despatched on the same day!
Look out for this icon next to products that qualify for this service. In order to purchase same-day despatch valves online, you’ll need to head over to our shop. Orders must be placed before 2 pm Monday-Friday (bank holidays excluded).
Currently, Seetru offers atmospheric safety valves and pipped discharge safety valves in brass or stainless steel. The Seetru LGS® range of safety relief valves (for liquid, steam, and gasses) are available in bronze construction, with open-lever and sealed-cap options. These valves can be fitted with PTFE or EPDM seals, with both types having the WRAS approval – for installation on public water supply systems.
We now hold a large variety of safety valves in stock, allowing customers to purchase certain quantities from our website, and see them despatched on the same day
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