High Pressure / Low Flow Pressure Regulating Valves

The JR Series line of high pressure regulators have the ability to handle very high pressures and very low flows. USDA and FDA approved soft goods available upon request.

  • Research and sampling systems
  • General, corrosive and specialty gas and liquid services (non-cavitating)


  • Research & sampling systems
  • General, corrosive & specialty gas and liquid service
  • Gas chromatography
  • Flame ionization defectors
  • Industrial controls
Features & Benefits
  • Top entry design facilitates in-line cleaning and maintenance
  • Barstock construction guarantees material integrity and surface finish
  • High flow rate coupled with high rangeability reduces need for reduced trim sizes
  • Optimized internal volume
  • Jorlon diaphragm material provides exceptionally long life
  • Soft seal material for ANSI Class VI shutoff

Seat Type: PTFE, PEEK, KEL-F

Sizes: 1/4″, 3/8″, 1/2″ (DN8, DN10, DN15)

End Connections: Threaded, socket weld, flanged, others

Body Materials: 316L Stainless Steel, Hastelloy C, Monel, Alloy 20, others

Cv (Kv): 0.012, 0.03, 0.08, 0.20 (0,01; 0,026; 0,07; 0,17)

Spring Range: up to 750 psi (52 bar)


LowFlow Valve Express Shipments

Our LowFlow Valve Express Program offers you options to get the products you need, when you need them. Many of our products are available for next business day shipment. Look for LowFlow Valve Express in the product descriptions.

JR and JB Porting Options

Need help determining the porting options available for the JR and JB Series?

J Series Product Matrix

A quick reference guide comparing the J Series regulators.

Jorlon Facts and Warranty

The majority of LowFlow regulators come with the Jorlon diaphragm and a lifetime diaphragm warranty.


ATEX Certified

LowFlow Express

The JR Series is available for next day shipment. Limit 2 per order. Configurations available are:

  • 316L, NPT, A port, Cv 0.012, 0.08, 0.2 PTFE or PEEK seat, all ranges

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Related Products

J Series Filters

High Pressure Filters

JRDL Series

Diaphragm Operated, Pressure Regulating Valve

JRH Series

Very High Pressure / Low Flow Pressure Regulator

JRHF Series

High Flow Pressure Regulating Valves

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