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Seetru Safety Valve

Seetru
Pressure Relief Valve and Level Indicator

Safety Relief Valves – Engineering Safety

Seetru safety and relief valves are designed to provide maximum safety in pressurized systems.

  • Pressure range: 0.3 bar – 700 bar

  • Material options: brass, bronze, stainless steel

  • Connection types: threaded, flanged, welded, tri-clamp

  • Application areas: steam, air, gas, liquid, cryogenic fluids

Seetru valves set the standards for industrial safety with their production in accordance with international standards (PED, ASME, WRAS, TÜV) and long service life.

Why Seetru Safety Valves

  • High precision opening-pressure tolerance

  • Compact and robust design – easy to install even in tight spaces

  • Easy maintenance – long-lasting component structure

  • Comprehensive certification and quality control

  • Made in the UK – global engineering assurance

Seetru valves offer optimum performance in all sectors requiring process safety.

Hydrogen Applications

Safety valves suitable for a wide range of hydrogen applications including hydrogen production, fuel cells, compressors and pumps, fuel systems, storage, pressure vessels, piping systems and transportation.

Detail

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Steam Applications

Typical applications for these valves include autoclaves, the pharmaceutical industry, vending machines, hot water boilers, steam boilers and plants, and clean steam applications. They are suitable for use at temperatures up to 250°C and a minimum dryness factor of 0.97.

Detail

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Cryogenic Applications

Safety valves for cryogenic and liquefied gas applications are manufactured using Seetru sealing technology, suitable for temperatures down to -196°C and pressures up to 1100 bar. PTFE, PPS or metal-to-metal sealing options are available.

Detail

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Refrigerant Applications

Safety valves for refrigeration applications are designed to meet the needs of the refrigeration industry, and compressor manufacturers offer safety valve technology for industrial refrigeration, commercial refrigeration, ice making systems, and air conditioning.

Detail

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Resim
Marka
Model
Detay
Katalog
Seetru
LGS HI-FLOW

  • Suitable for liquid, gas and steam applications

  • Enclosed discharge design.
    It has wide outlet connections to provide higher flow capacity.

  • Bronze

  • 1/2" – 2 1/2" BSP threaded female connections

  • 0.2 – 24 bars

Data Sheet
Seetru
646

  • Enclosed Discharge

  • Stainless steel

  • 3/8” – 1 1/2” (varies depending on passage diameter)

  • 6.6 – 55.2 bar (varies depending on passage diameter)

Data Sheet
Seetru
LGS

  • Suitable for liquid, gas and steam applications.

  • Enclosed discharge design.
    It has a dual-guided spindle structure and Seetru Rock-Seal™ technology.

  • Bronze

  • 1/2" – 2 1/2" BSP threaded female connections
    (1/2" – 2" BSP for LGS HI-FLOW models)

  • 0.2 – 24 bars

Data Sheet
Seetru
936

  • Enclosed Discharge
    Brass inlet connection, body part is available in bronze or stainless steel options.
    It has a metal-to-metal sealing structure.

  • 1/2" – 2" BSP, BSPT or NPT threaded connections

  • 0.3 – 28.0 bars

Data Sheet
Seetru
946

  • Enclosed Discharge
    Stainless steel

  • 1/2” – 2” threaded connections (varies depending on valve passage diameter)
    0.3 – 28.0 bar (varies depending on valve passage diameter)

Data Sheet
Seetru
75008

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 1/4” – 1/2”

  • 0.27 – 5.0 bar

Data Sheet
Seetru
6L0

  • Enclosed Discharge

  • Stainless steel

  • 1/2” – 1” TRI-CLAMP connections

  • 0.7 – 30.0 bar

Data Sheet
Seetru
980 Gear

  • Stainless steel

  • 10 mm, 15 mm, 20 mm and 25 mm options are available.

  • 1/2” – 2” threaded connections (varies depending on valve passage diameter)

  • 0.3 – 36.0 bar (varies depending on valve passage diameter)

Data Sheet
Seetru
970 Gear

  • Closed discharge

  • Brass inlet; bronze or stainless steel body (depending on passage diameter). Stainless steel disc.

  • 1/2” – 2” threaded connections

  • 0.3 – 36 bars

Data Sheet
Seetru
680

  • Closed discharge

  • Stainless steel

  • 3/8” – 2”

  • 0.7 – 30 bars

Data Sheet
Seetru
670/690

  • Closed discharge

  • Bronze or stainless steel

  • 3/8” – 2”

  • 0.7 – 30 bars

Data Sheet
Seetru
346/356

  • Closed discharge

  • Bronze or stainless steel

  • 3/8” – 3/4”

  • 0.83 – 30.76 bars

Data Sheet
Seetru
636

  • Closed discharge

  • Bronze

  • 3/8” – 1 ½” (depending on valve passage diameter)

  • 6.6 – 55.2 bar (depending on valve passage diameter)

Data Sheet
Seetru
319

  • Open discharge

  • Rice

  • 3/8” – 1/2” or 7/8” x 14 UNF (depending on valve passage diameter)

  • 13.5 – 55.2 bars

Data Sheet
Seetru
64613/64113 FL

  • Closed discharge

  • Stainless steel

  • DN20 (3/4”) or DN25 (1”) DIN or ANSI flanges

  • 0.32 – 49 bars

Data Sheet
Seetru
98010 FL

  • Closed discharge

  • Stainless steel

  • 10 mm

  • 1/2” threaded connection

  • 0.3 – 36 bars

Data Sheet
Seetru
94615 FL

  • Enclosed Discharge

  • Stainless steel

  • DN15 (1/2”), DN20 (3/4”) or DN25 (1”) flange connections are available with DIN EN 1092 and ANSI flange options.

  • 0.3 – 28.0 bars

Data Sheet
Seetru
94610 FL

  • Enclosed Discharge

  • Stainless steel

  • DN15 (1/2”), DN20 (3/4”) or DN25 (1”) flange connections are available with DIN EN 1092 and ANSI flange options.

  • 0.3 – 28.0 bars

Data Sheet
Seetru
98015 FL

  • Enclosed Discharge

  • Stainless steel

  • DN15 (1/2”), DN20 (3/4”) or DN25 (1”) flange connections are available with DIN EN 1092 and ANSI flange options.

  • 0.3 – 33.0 bars

Data Sheet
Seetru
94605 - 946H5 - 95605 - 956H5

  • Enclosed Discharge

  • Stainless steel

  • ½” NPT, BSP and BSPT | 9/16” Tapered & Threaded | 3/4” Tapered & Threaded connections

  • 35.0 – 515 bar (Model 9 605) / 35.0 – 1100 bar (Model 9 6H5). Maximum set pressure for steam applications is 85 bar.

Data Sheet
Seetru
6G6/6G1

  • Enclosed Discharge

  • Stainless steel

  • 1/2” – 1” Tri-Clamp connections (varies depending on valve passage diameter)

  • 0.32 – 55.2 bar (varies depending on valve passage diameter)
    The maximum set pressure for steam applications is 12 bar.

Data Sheet
Seetru
B4605/B6605/359

  • Enclosed Discharge

  • Stainless steel

  • 3/8” and 1/2”

  • 35.0 – 500.0 bars

Data Sheet
Seetru
33110/34110/34410

  • Enclosed Discharge

  • Brass or stainless steel body and stainless steel inlet connections

  • 3/8” – 1/2” threaded inlet connections

  • 27 – 36 bar and 48.3 – 241.3 bar

Data Sheet
Seetru
86810

  • Enclosed Discharge

  • Brass and PPS plastic (polyphenylene sulfide)

  • 1/2” – 3/4”

  • 7.0; 8.0; 9.3; 10.0; 10.5; 11.0; 11.5; 14.5 and 16.0 bars

Data Sheet
Seetru
63608

  • Enclosed Discharge

  • Brass and PPS plastic (polyphenylene sulfide)

  • 0.3..13.2 bars

Data Sheet
Seetru
646/601

  • Enclosed Discharge

  • Stainless steel

  • 3/8” – 2”

  • 6.6 – 55.2 bars

Data Sheet
Seetru
636/631&656/651

  • Enclosed Discharge

  • Bronze

  • 3/8” – 2”

  • 0.32 – 55.2 bars

Data Sheet
Seetru
55004

  • Open discharge (Atmospheric Discharge)

  • Brass - Stainless steel

  • 3/8” – 2”

  • 69.0 - 448.2 bar (3/8” and 1/2”) / 69.0 - 345.0 bar (1/4”)

Data Sheet
Seetru
31210

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 3/8” – 3/4”

  • 20.6 - 134.5 bars

Data Sheet
Seetru
31180

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 1/4” – 3/8”

  • 20.6 - 134.5 bars

Data Sheet
Seetru
31140

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 2” (2 1/2” possible using adapter)

  • 2.8 – 9.4 bar (lower ranges: 2.8 – 3.8; 4.3 – 4.5; 5.5; and 7.7 – 9.4 bar)

Data Sheet
Seetru
106/116

  • Open discharge (Atmospheric Discharge)

  • Brass - Aluminum

  • 1" - 2”

  • 0.5 to 12.0 bar

Data Sheet
Seetru
74008

  • Open discharge (Atmospheric Discharge)

  • Stainless steel

  • 1/4" - 1/2"

  • 0.27 . 17.5 Bar

Data Sheet
Seetru
616/611

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 1/4" - 2"

  • 2.55 Bars

Data Sheet
Seetru
848/841

  • Open discharge (Atmospheric Discharge)

  • Stainless steel

  • 1/4" - 2"

  • 0.55 - 21 Bar

Data Sheet
Seetru
818/811

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 1/4" - 1"

  • 0.48 - 50.9 Bar

Data Sheet
Seetru
33020/34020/34320

  • Enclosed Discharge

  • Brass or stainless steel body and stainless steel inlet connections

  • 3/8” – 1/2” threaded inlet connections

  • 55 bar and 103.4 bar

Data Sheet
Seetru
73008

  • Open discharge (Atmospheric Discharge)

  • Rice

  • 1/4" - 1/2"

  • 0.27 . 17.5 Bar

Data Sheet

Industrial Applications

Application Areas

  • Steam systems: Safe evacuation of boilers and steam lines

  • Hydrogen Applications

  • Compressed air and gas systems: Compressor and air tank protection

  • Chemical processes: Stainless steel housing for corrosive fluids

  • Cryogenic applications: Special design for liquefied gas (LPG, LNG, N₂, O₂)

  • Food and beverage industry: Hygienic valve solutions with tri-clamp connection

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