600 Series

The 600 series safety valves are intended for low flow steam, gas and liquid applications. Wetted parts are manufactured in 316L stainless steel material with an FDA and USP Class VI compliant Isolast seat seal. The 646 series are designed for steam and gas service while the 680 series is intended for liquid applications. All models are CE compliant.

Applications	Equipment protection
Size range	Inlet – 1/2″ & 3/4″ ASME BPE compliant clamp connections Outlet – 3/4″ BSP, 1/2″, 3/4″ or 1″ BPE compliant clamp connections
Material	316L stainless steel
Set pressure range	0.48 – 30 barg
Options	Lifting device
Literature	Data sheet Installation & maintenance

481 Series

The 481 series valves are intended for steam, liquid and gas applications up to 16 barg, or when fitted with a high pressure disc, 68 barg. Standard valves have and FDA and USP Class VI EPDM seat seal, clamp inlet and threaded outlet. Valves can also be supplied fitted with a threaded clamp outlet adaptor. The 481 is both ASME section VIII Division 1 and CE Category IV approved.

Applications	Equipment protection
Size range	Inlet – 3/4″ & 1″ ASME BPE compliant clamp connections Outlet – 1/2″ BSP, 3/4″ or 1″ ASME BPE compliant clamp connections
Material	316L stainless steel
Set pressure range	0.3 – 68 barg
Options	Lifting device
Literature	Data sheet Installation & maintenance

483 Series

The 483 series valves are intended for liquid and gas applications up to 16 barg. When fitted with a Perlast seat seal, valves are also suitable for steam duty. All valves are fitted with EPDM bellows which prevents media from entering the spring chamber during discharge. Available with two orifice sizes, the type 483 is both ASME Section VIII Division 1 and CE Category IV approved.

Applications	Equipment protection
Size range	1″, 1-1/2″ & 2″ ASME BPE compliant clamp connections
Material	316L stainless steel
Set pressure range	0.3 – 16 barg
Options	Lifting device
Literature	Data sheet Installation & maintenance

488 Series

The 488 series valves are intended for liquid and gas applications up to 16 barg where high capacity valve design is required. When fitted with a Perlast seat seal, valves are also suitable for steam duty. All valves are fitted with EPDM bellows which prevents media from entering the spring chamber during discharge. Three orifice sizes and three connection options are available for the 488 valve based on capacity requirement. ASME Section VIII Division 1 and CE Category VI approved.

Applications	Equipment protection
Size range	1-1/2″ – 4-1/2″ ASME BPE compliant clamp connections
Material	316L stainless steel
Set pressure range	0.1 – 16 barg
Options	Lifting device Lift indicator
Literature	Data sheet Installation & maintenance

Threaded valves

In addition to the clamp ended range of safety valves, Staitech also offer threaded high performance stainless steel safety valves in a range of sizes. All valves are CE compliant and satisfy TUV and ASME pressure codes.

Applications	Equipment protection
Size range	1/2″ – 2″ BSP and NPT connections
Material	316L stainless steel
Set pressure range	0.3 – 68 barg
Options	Lifting device Lift indicator
Literature	Data Sheet Installation & Maintenance

Flanged valves

Where a flanged valve is required Staitech offers both cast and bar-stock valves in sizes up to 4″. As with the threaded safety valve range, all valves are CE compliant and meet TUV and ASME pressure code requirements.

Applications	Equipment protection
Size range	1/2″ – 6″ DIN and ANSI Flanged connections
Material	316L stainless steel
Set pressure range	0.3 – 68 barg
Options	Lifting device Lift indicator
Literature	Data sheet Installation & Maintenance

Hydrogen safety valves

Leser have now developed valves to meet the increasing shift into finding greener energy solutions. Contact Staitech to find out more about the range of Hydrogen suitable safety valves.

Applications	Equipment protection
Literature	Hydrogen catalogue

665 relief valves

The Type 665 is a proportioned relief valve designed for liquid applications in high purity systems. Valves can be adjusted between 0.5 and 10 barg and are supplied with a removable lifting lever. The Type 665 design falls within the SEP category of the Pressure Equipment Directive.

Applications	Equipment protection
Size range	1/4″ – 4″ ASME BPE compliant clamp connections
Material	316L stainless steel
Set pressure range	0.3 – 68 barg
Options	Various seal options available – EPDM, Viton, PTFE Lifting device Enhanced surface finishes and electropolishing
Literature	Data Sheet