Safety valves overview

The most important requirement in the plant - safety Designed for maximum security and performance, we offer a wide range of safety valves to suit your requirements. We understand that the protection of employees is the most important requirement in the plant environment and so we ensure our safety valves are manufactured for secure, long-lasting protection against excess pressure. Designed to be compact, we offer a variety of body materials, features and sizes, so whatever the application, you can be sure that your people, process and equipment are safeguarded with safety valves from Spirax...

SV405 and SV406 Designed for protection against overpressure in general process applications such as sterilisers, small compressors and pressure vessels. The SV405 has a brass body, 304 stainless steel nozzle and Viton ‘O’ ring seat seal as standard. The SV406 has a stainless steel body, 316 stainless steel nozzle and Viton ‘O’ ring seat seal as standard. Application illustration Range table Model Maximum operating pressure Outlet Screwed ¾" BSP parallel female BS 21 Rp or NPT* Screwed ¾” BSP parallel female BS 21 Rp or NPT* Screwed ½" or ¾" BSP taper male BS 21 R or NPT* Screwed ½” or ¾” BSP...

SV405X and SV405P SV405X Designed for applications where enhanced corrosion resistance is required. The SV405X has a brass body, 316 stainless steel nozzle and Viton ‘O’ ring seat seal as standard. Range table Model Maximum operating pressure Connections Inlet Approvals Outlet Screwed ½” or ¾” BSP taper male BS 21 R or NPT* Screwed ¾” BSP parallel female BS 21 Rp or NPT* Seat tightness complies with API standard 527.This product fully complies with the requirements of the European Pressure Equipment Directive 97 / 23 / EC, fall within Category 4 for Group 2 gases and carries the mark SV405P Designed...

SV615 Suitable for the protection of steam or hot water boilers, generators, vessels, receivers and air compressors, autoclaves, downstream of pressure reducing valves and for general pressure relief applications. Application illustration Range table Maximum operating pressure Connections Inlet Screwed BSP (BS 21 parallel) or NPT female connections. 1” Sanitary clamp compatible (DN15, DN20 and DN25 sizes only) BS 4825 / ISO 2852 / DIN 32676 The SV615 complies with the requirements of EN ISO 4126:2004 and carries the CE mark indicating full compliance with the requirements of the European Pressure...

SV60 Suitable for the protection of steam boilers, pipelines, pressure vessels, compressors and receivers and most general process industry applications. Range table Maximum operating pressure Connections Inlet Carbon steel The SV60 carries the mark CE and complies with the requirements of the European Pressure Equipment Directive 97 /23 / EC falling within Category 4 for Group 2 gases. Seat tightness to ASME / API Standard 527-1992. Lloyds Register (LR) type approval - Certificate number 01 / 00125 (E2).The SV604 (PN flanged) is approved by the TÜV to AD-Merkblatt A2, AD-Merkblatt A4, TRD 421,...

SV60H Designed to protect hot water generators from overpressure in accordance with DIN 4751, Side 2, for temperatures up to 120°C. Range table Maximum operating pressure Connections Inlet Carbon steel The SV60H carries the CE mark and complies with the requirements of Inlet: DN20, the European Pressure Equipment DN25, DN32, Directive 97/23/EC and falls within DN40, DN50, Category 4 for Group 2 gases. The DN65, DN80, DN100, DN125 SV60H is approved by the TÜV to TRD 421, TRD 721 and Vd TÜV Merkblatt and DN150 SV100 and 100/ 4.

SVL606 Suitable for the overpressure protection of steam boilers, pipelines, pressure vessels and most general process industry applications. Particularly useful where a valve of all stainless steel construction is required to minimise contamination of the process media or where hygienic considerations and aesthetic qualities are prerequisites. This valve is also suitable for cryogenic service - SVL606-B with a sealed cap for liquid service. - SVL606-C with a packed easing lever for steam  (or other services where a lever is specified). Range table Maximum operating pressure Connections Inlet...

SV73 Primarily intended for use on power boilers and unfired pressure vessels where ASME Section I and VIII stamped valves are required. The SV73 cast iron series valves are built in conformance to Section I and VIII of the ASME Boiler and Pressure Vessel Code. Applications Protection of steam systems downstream of pressure regulating stations, on inlet to such equipment as air coils, heat exchangers and process vessels. Also for Application illustration use on flash recovery vessels on condensate return systems to protect vessels. Air systems to protect accumulation vessels and air equipment...

SV74 Designed for protection of steam systems downstream of pressure regulating stations, on inlet to such equipment as air coils, heat exchangers and process vessels. Also for use on flash recovery vessels on condensate return systems to protect vessels. Air systems to protect accumulation vessels and air equipment from over pressurisation. Steam boilers and generators. The SV74 is available with carbon steel body and stainless steel trim in orifice sizes from ‘F’ to ‘R’. It has an open bonnet and easing lever and flanged connections. Range table Maximum operating pressure Connections Inlet...

Operating Companies Manufacturing Sites Sales Offices Spirax-Sarco Limited, Charlton House, Cheltenham, Gloucestershire, GL53 8ER, UK T +44 (0)1242 521361 F +44 (0)1242 573342 E [email protected] © Copyright 2019. Spirax Sarco is a registered trademark of Spirax-Sarco Limited. Some products, services or solutions may not be available in certain markets.