All Safety and Relief Valves

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  • LESER API Series Safety Valves
    API meets all requirements of the API 526 norm and includes the entire orifice D to T product range. API 526 is a purchase specification in which the nominal diameters, flange pressure ratings, centre to face dimensions, flow areas, body and spring materials and their service limits are stipulate..
  • LESER High Performance Safety Valves
    Full lift safety valves open rapidly within an overpressure of 5% to the full design lift. They are used in particular for vapours and gases, in applications where the maximum mass flow has to be discharged rapidly. LESER types 441/442, 4444 are suitable for almost any industrial application, and..
  • LESER Pilot Operated Safety Valves
    Pilot Operated Valves are now available from Pressure Systems. LESER's Series 810 and series 820 are designed in compliance with API 526 for easy replacement. Complete API 526 product range with valve sizes from 1" to 8", orifice D to T. Body materials WCB, CF8M, LCB, 1.0619, 1.4408 and a diversity ..
  • TVT Series 7700 Back Pressure Regulator
    The 7700 Series is designed for use in regulating back pressure on a system to avoid overpressure on equipment or piping. Maintains safe, internal working pressure while providing excellent protection. ..
  • TVT Series 8100 High Pressure Safety Relief Valve
    The 8100 Series safety relief valve addresses the high pressure needs of the market utilizing soft seat technology. The 8100 Series shows consistent, repeatable relief even under the most difficult of conditions. ..
  • TVT Series 8200/8300 Safety Relief Valves
    8200/8300 Series safety relief valves are engineered and manufactured to the highest standards and feature a high endurance soft seat which guarantees a bubble-tight seal for hundreds of “pops”. The unique patented radius disc design guarantees dependable, repeatable relief even under the most ..
  • TVT Series 8400 Vapour Valve
    The 8400 Series is designed for pressure relief in applications where hazardous vapors are to be piped away. Maintains safe, internal working pressure while preventing routine expulsion of waste to the atmosphere. ..
  • TVT Series 9000 Stack Vent Valve
    The 9000 Series provides reliable pressure and vacuum for storage tanks. The valve opens when pressure or vacuum exceeds pre-determined setting. It then returns to a bubble-tight seal when pressure returns to within the desired range. ..
  • TVT Series 9400 High Pressure Relief Valve
    The 9400 Series is designed for use on high pressure liquid service. Maintains safe, internal working pressure while preventing expulsion of liquids to the atmosphere. ..
  • LESER Compact Performance Safety Valves
    Safety valves with threaded connections are used for handling small and medium mass flows. The LESER threaded connection safety valves are notable for their wide range of set pressures, compact overall dimensions and low weight. ..
  • LESER Modulate Action Safety Valve
    Relief valves open in proportion to the pressure rise. They are used wherever normally expected mass flows are very small and the medium loss is to be kept as low as possible (e.g. thermal expansion). Safety relief valves are ideal relief valves for medium mass flows. Their large proportional ran..
  • Type PS-BBS Brass & Bronze Liquid Relief Valves
    These Brass & Bronze safety and relief valves are suitable for most general applications where a safety device is required on pipelines, pumps and vessels to relieve excess pressure and help prevent over-pressure, water-hammer and general liquid relief applications. The adjustable pr..

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