Consolidated
4900 Series MPV Modular Pilot Operated Safety Relief Valve
Inlet Sizes
1″ to 8″ flanged
Inlet Ratings
ASME Class 150 to 2500
Outlet Sizes
2″ through 10″ flanged
Outlet Ratings
ASME Class 150 to 300
Orifice Sizes
D through T, Full Bores
Set Pressure Range
15 psig to 7200 psig
Temperature Range
-40°F to 505°F
Materials
Stainless steel pilot with carbon steel main valve and stainless steel trim. Other materials available
Standards and Regulations
ASME B & PVC, Section VIII
Pressure Equipment Directive
Description
The Type 4900 modular pilot-operated safety relief valve (MPV) features a separate, non-flowing pilot sub-assembly design making it well-suitable for use with both compressible and incompressible fluids. Optional pilot valve constructions offer either pop action or modulating action functionality to meet various pressure range, seat tightness, and blowdown requirements. Key features and benefits of the 4900 Pilot Operated Safety Relief Valve include:
- Modular design is easy to install, operate, and maintain.
- Tubing and fittings are eliminated for simple assembly and disassembly, in addition to fewer leak paths.
- Streamlined design addresses issues of tubing damage potentially caused by harsh environments and rough use.
- Top-entry design offers easy access to the main valve components for reduced maintenance and operating costs.