Crosby EM Series Pressure Safety Valve
The Emerson Crosby EM-Series Spring Safety Valves are a cost effective, robust and simple overpressure protection solution for gases, steam, liquids and two-phase applications.
The Crosby EM Series pressure safety valve provides overpressure protection from very basic to the most demanding applications. Backed by over 150 years of engineering and application experience, its versatile and rugged design makes it a proven solution in all industrial applications.
The Crosby EM Safety Relief Valve provides reliable overpressure protection for industrial applications up to 40 bar (580 psig). It is fully type-tested for use on gases and liquids with a universal unique trim. Widely
available in full compliance with most global codes and standards.
The EM-Series brings the no-nonsense basic solution the industry needs for reliable and tested overpressure protection with minimal maintenance costs. The design, manufacturing, service and support of the Crosby EM Series valves are backed by more than 150 years of unrivalled experience, and world-class international resources
and capabilities.
Features
- Single trim design for steam, gases and liquids
- Enhanced seat tightness
- Simple optimized design brings reduced number of parts and increased reliability
- Restricted lift available to exactly match the application and reduce emissions
- Sturdy light-weight body construction
- Modular concept reduces stock of parts
- Flexible configurations for enhanced control and monitoring
- Available with wireless emissions monitoring
- EMC is a conventional design which can accept up to 15% built-up back pressure.
- EMH is similar to the EMC except that it is fitted with an open bonnet and is particularly suited for steam or air applications.
- EMB is a balanced bellows design fitted with a metallic bellows suitable to accept up to 40% back pressure.
- Pop action, less than 5% overpressure to full-lift on gases and steam
- Proportional lift on liquids with up to 10% overpressure
- Mechanical lift stop ensures functional stability whatever the fluid is
- Accepts up to 40% variable back-pressure with optional balanced bellows
Specification
Connections: EN 1092-1 or ANSI B16.5 flanges
Size inlet: DN 25 to 100 (1 in. to 4in.)
Pressure ratings: PN 10 to PN 40, CL 150 to CL 300
Temperature range: -196 to 427ºC (-320 to 800ºF)
Set pressure: 0.2 to 40 barg (3 to 580 psig)
Orifice diameter: 23 to 92 mm (0.91 to 3.62 in.)
Body materials: 1.0619, SA216 WCB/WCC, SA352 LCB/LCC, 1.4408, SA351 CF8M/CF3M
Accessories: Lifting levers, Test gag, Hardened seat, Restricted lift, Monitoring, Others on request