Enclosed Discharge Safety Relief Valves - Type 946 Flanged - 10 mm and 15 mm Bore

Seetru Limited

  • Enclosed Discharge Safety Relief Valves - Type 946 Flanged has a working temperature range of -50°C to +250°C
  • Pressure range: 0.3 to 28.0 bar (depending on valve bore size)
  • It is made of the stainless steel  with threaded connections and metal-to-metal sealing
  • Certified for a wide range of temperatures & pressures
  • Can be customized according to customer requirements

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Enclosed Discharge Safety Relief Valves - Type 946 Flanged - 10 mm and 15 mm Bore

  • Seetru valves can withstand set pressures up to 1100 bar, making them ideal for use in even the most demanding hydrogen applications. Seetru’s valves are designed to open quickly and reliably when the system pressure exceeds the set pressure, allowing excess gas to escape safely. This helps to prevent damage to the system and protect personnel from injury.
  • Seetru prioritises rigorous testing and analysis, ensuring exceptional valve performance across diverse applications. Their keen understanding of various industries allows us to tailor valves to specific needs. By combining cutting-edge design, unparalleled expertise, and application-specific solutions, we have established ourselves as a leader in the safety valve industry. 
  • Hydrogen has many forms of production: Steam Methane Reforming, Coal Gasification, and Electrolysis.
  • The Seetru range of safety valves for hydrogen have been designed to be compact and highly efficient, offering repeatable performance protection for a wide range of systems and processes.

Key features

  • Min. Pressure: 0.30 bar. (4.35 psi) 
  • Max. Pressure: 28.00 bar (406.00 psi g.)r g. (72.50 psi) 
  • Temperature Range: -50°C to +250°C 
  • Bore size: 10 mm and 15 mm
  • Inlet Connections: DN15/DN20/DN25 DIN or 1/2", 3/4",1" ANSI (for 10 mm bore size), and DN25 DIN or 1" ANSI Flange (for 15 mm bore size)
  • Outlet Connections(s): DN25 DIN or /1" ANSI Flange (for 10 mm bore size), and DN40 DIN or 1 1/2" ANSI Flange (for 15 mm bore size)
  • Flow Rate: 11.70 to 398.00 std. liters/sec for 10 mm bore size and 22.50 to 799.00 std. liters/sec for 15 mm bore size
  • Materials: Brass & Bronze or St. Steel 
  • Test Certification: Included - supplied free of charge 

Approvals for Safety Relief Valves

  • Designed in accordance with BS EN ISO-4126-1 & -7
  • PED 2014/68/EU (CE)
  • PE(S)R UK SI 2016 No. 1105 (UKCA)
  • EAC
  • Leak tightness at 90% set pressure to API 527 and in accordance with EN ISO 4126-1

Technical information by bore size

  • TÜV alloted outflow coefficients for pressures above 3.0 bar, for lower pressures please see the flow rate tables or contact Seetru.
  • Maximum permissible built up back pressure = 10% of set pressure at or below which flow is not reduced. 
  • Stable operation on flows down to 50% of valve rated capacity.
  • Leak tightness at 90% set pressure to API 527 and in accordance with EN ISO 4126-1.
  • For more information please refer the datasheet.

Application areas

  • Hydrogen generation
  • Fuel cells
  • Compressors and pumps
  • Fuelling systems
  • Hydrogen storage
  • Pressure vessels
  • Piping systems
  • Transportation

Contact us

  • By combining cutting-edge design, unparalleled expertise, and application-specific solutions, Seetru has established themselves as a leader in the safety valve industry. Interested? Please contact the vendor directly by filling in the contact form. 
Brand Seetru
Max Pressure (in bar) 28
Min Pressure (in bar) 0.3
Connector Threading 1/2” to 2”
Manufacturing Readiness (MRL) 10
Technology Readiness (TRL) 9
Compliant with BS EN ISO-4126-1 & -7, PED 2014/68/EU (CE), PE(S)R UK SI 2016 No. 1105 (UKCA), EAC, API 527
Max Ambient Temperature (in °C) 250
Min Ambient Temperature (in °C) -50
Seetru Limited

Seetru supplies safety relief valves suitable for a wide range of hydrogen applications, including hydrogen generation, fuel cells, compressors and pumps, fuelling systems, storage, pressure vessels, piping systems, and transportation.

These valves can withstand set pressures up to 1100 bar, making them ideal for use in even the most demanding hydrogen applications.  Seetru’s valves are designed to open quickly and reliably when the system pressure exceeds the set pressure, allowing excess gas to escape safely.  This helps to prevent damage to the system and protect personnel from injury.

Seetru’s safety relief valves are manufactured in accordance with the highest international standards and are available in a variety of materials and configurations to meet the specific needs of each application.

99% of all inquiries get answered within 5 days. Your inquiry will be sent immediately to the right person within the vendor organisation.

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By ticking the checkbox, you consent to the collection and storage of the data you have provided for the purpose of contacting and answering your request in accordance with our Privacy Policy. You can revoke your consent at any time by sending an email to bye-bye@hyfindr.com.

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