Relief Valve
Description
Circle Seal Controls Model L5349B-2PP Relief Valve
Catalog literature: Relief Valves Catalog.pdf
The Circle Seal Controls model L5349B-2PP relief valve provides a combination of high cracking pressures, absolute leak-proof sealing when closed, and virtually maintenance-free dependability in a relatively small, lightweight package.
Features:
- Zero leakage: dead-tight sealing well above 95% of cracking pressure; system pressure on poppet increases sealing efficiency with increasing pressure until cracking pressure has been reached
- Positive resealing: repeatedly reseals dead-tight only slightly below cracking pressure
- Virtually no pressure rise with increasing flow: design utilizes system back pressure on poppet to increase lift providing excellent flow characteristics with little or no pressure rise
- Cracking pressure accuracy: valves crack repeatedly at preset pressure with minimum variation; o-ring breakaway friction is overcome before valve opens
- No chatter or squeal: completely balanced; smooth, quiet operation at all flows; no chatter or squeal from pressure changes or surges downstream
- Externally adjustable: external adjustment permits changes in cracking pressure to meet circuit requirements; interchangeable springs permit change of cracking pressure range
- Versatile: various materials for both body and seals; PED certifications and CE marking available for most models
Technical Data:
- Cracking pressure: 420-10,500 PSIG
- Body material: Brass
- Seal material: Buna N
- Poppet material: CRES 440C
- Connections: 1/4″ FNPTxFNPT
- Temp range: -65 to +250F
Dimensions:
- “B” dimension (height): 4.88″ (for cracking pressures 420-3,074 psig); 5.78″ (for cracking pressures 3,075-10,500 psig)
- “C” dimension (hex): 1/2″
- “F” dimension (hex): 1.50″
- “G” dimension (diameter): 1.38″
- “H” dimension (hex): 1.25″
- “K” dimension (diameter): 0.125″
- Weight (lbs.): 1.6