Emerson Crosby J-Series direct spring-loaded pressure relief valve for gas, liquid and steam

The Crosby J-Series is a direct spring-loaded pressure relief valve for gas, liquid, steam and multiphase service. It covers basic and medium pressure relief duties.

The valve does not depend on pilot gas, is easy to maintain, and OEM spare parts are available. Set pressure, capacity and materials are determined by calculation per API 520 / API 521; setting is done on a test bench to specification. Connection is threaded or ASME flanged; ASME VIII and PED compliance per the version stamp.

Key features:

• Direct spring-loaded — no pilot gas required
• Gas, liquid, steam and multiphase service
• Sizing per API 520 / API 521
• Straightforward maintenance and OEM spare parts

Specifications:

• Type: spring-loaded, direct acting
• Media: gas, liquid, steam, multiphase
• Sizing: API 520 / API 521
• Connection: threaded or ASME flange
• Setting: to specification, on test bench
• Codes: ASME VIII and PED — per stamp

Application: Overpressure protection of vessels, heat exchangers, pumps and pipelines in refineries, chemical plants and power generation.

Before ordering: Selected by calculation: before ordering, specify the medium, set pressure, required capacity, temperature, connection and code requirements (ASME / PED).