NLB Series No Lube Pressure Bypass Valve

The Simtech NLB Series Pressure Bypass Valve is a 3-port valve designed to relieve excess fluid pressure in high purity applications where lubrication is not permitted. When mounted in-line, the pressure by-pass valve will permit fluid to pass through the system. When pressure approaches the valve setting, fluid is vented through the bottom port.  Adjustable screw and lock-nut makes it easy to accurately pre-set relief pressure.  Note: This valve is not designed to be used in piping systems with back-pressure on the downstream side.

Available sizes: ¼” – 2”
Body materials: PVC, PP, PVDF, PTFE
Seals:                EPDM, Viton, Kalrez
Connections:     ¼" - 1" FNPT; 1½" - 2" MPT

  • Wide working pressure range (10 to 80 psi)
  • Top entry for easy in-line maintenance and can be factory pre-set upon request.
  • Ideal for high purity piping systems as well as most harsh chemicals and corrosives.
  • No metal contact with fluid

1-30 of 54 Products   Sort by:
ProductSizeMaterialSealsEnd ConnectionList PriceAdd to Cart
NLB 101 4 002¼"PVCEPDMThreaded: NPT$734.00Add to Cart
NLB 101 4 005½"PVCEPDMThreaded: NPT$778.00Add to Cart
NLB 101 4 007¾"PVCEPDMThreaded: NPT$964.00Add to Cart
NLB 101 4 0101"PVCEPDMThreaded: NPT$1,103.00Add to Cart
NLB 101 4 0151½"PVCEPDMThreaded: NPT$1,456.00Add to Cart
NLB 101 4 0202"PVCEPDMThreaded: NPT$1,571.00Add to Cart
NLB 102 4 002¼"PVCFPMThreaded: NPT$759.00Add to Cart
NLB 102 4 005½"PVCFPMThreaded: NPT$800.00Add to Cart
NLB 102 4 007¾"PVCFPMThreaded: NPT$1,014.00Add to Cart
NLB 102 4 0101"PVCFPMThreaded: NPT$1,144.00Add to Cart
NLB 102 4 0151½"PVCFPMThreaded: NPT$1,513.00Add to Cart
NLB 102 4 0202"PVCFPMThreaded: NPT$1,641.00Add to Cart
NLB 401 4 002¼"PolypropyleneEPDMThreaded: NPT$844.00Add to Cart
NLB 401 4 005½"PolypropyleneEPDMThreaded: NPT$887.00Add to Cart
NLB 401 4 007¾"PolypropyleneEPDMThreaded: NPT$1,079.00Add to Cart
NLB 401 4 0101"PolypropyleneEPDMThreaded: NPT$1,344.00Add to Cart
NLB 401 4 0151½"PolypropyleneEPDMThreaded: NPT$2,049.00Add to Cart
NLB 401 4 0202"PolypropyleneEPDMThreaded: NPT$2,646.00Add to Cart
NLB 402 4 002¼"PolypropyleneFPMThreaded: NPT$870.00Add to Cart
NLB 402 4 005½"PolypropyleneFPMThreaded: NPT$912.00Add to Cart
NLB 402 4 007¾"PolypropyleneFPMThreaded: NPT$1,112.00Add to Cart
NLB 402 4 0101"PolypropyleneFPMThreaded: NPT$1,379.00Add to Cart
NLB 402 4 0151½"PolypropyleneFPMThreaded: NPT$2,124.00Add to Cart
NLB 402 4 0202"PolypropyleneFPMThreaded: NPT$2,720.00Add to Cart
NLB 407 4 002¼"PolypropyleneKalrez®Threaded: NPTPleaseCallAdd to Cart
NLB 407 4 005½"PolypropyleneKalrez®Threaded: NPTPleaseCallAdd to Cart
NLB 407 4 007¾"PolypropyleneKalrez®Threaded: NPTPleaseCallAdd to Cart
NLB 407 4 0101"PolypropyleneKalrez®Threaded: NPTPleaseCallAdd to Cart
NLB 407 4 0151½"PolypropyleneKalrez®Threaded: NPTPleaseCallAdd to Cart
NLB 407 4 0202"PolypropyleneKalrez®Threaded: NPTPleaseCallAdd to Cart
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