We are working on HIPPS 3" CL 2500 Self-Contained Hydraulic Emergency Shutdown Systems
gate valve . The ESD control panel include two HP and LP Hydraulic Pressure switch. Fail close time <3 sec and displacement 3.5" . My question is how to calculate the actuator SPRING for quick action...
Hi . I am doing some repair work on 8" CL 1500 bolted bonnet Globe valve. The sealing surface HF seat ring and disk 410SS. The sealing surface( Cup type) height is about 1/2". lapped with 180 grit size .It failing pressure at 1000 psi.
What option we should take:
Use hemmer type...
Have you seen API 624 copy ? I have read the draft copy only . Where acceptance criteria are subject to agreement between the end user or when superseded by local ordinance .