Gas Back Pressure Regulating Valve

The JB Series line of back 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 for corrosive and specialty gases
  • Gas chromatography
  • Flame ionization detectors
  • Industrial controls


  • Gas chromatography
  • Flame ionization detectors
  • 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 seat materials for ANSI Class VI shutoff

Seat Type: 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): 0.05, 0.15, 0.25, 0.35 (0,04; 0,13; 0,22; 0,30)

Spring Range: up to 750 psi (up to 52 bar)


JR and JB Porting Options

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

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.

Jorlon Facts and Warranty

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


ATEX Certified

LowFlow Express

The JB Series is available for next business day shipment. Limit 2 pieces per order. Available in the following configurations:

  • 316L, NPT, A port, Cv 0.015, 0.25, 0.35, 0.05 PTFE or PEEK seats, all ranges

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Related Products

JBDL Series

High Cv Diaphragm Back Pressure Regulating Valve

JBPH Series

Piston Sensed, Back Pressure Regulating Valves

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