Elster Jeavons J78R 1/2" Commercial Gas Regulator - 15-23 mbar

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The Elster Jeavons J78R 1/2" Commercial Gas Regulator, designed to meet the high demands of both commercial and industrial environments, as well as domestic meter service applications. This versatile regulator is your go-to solution for precise gas flow management, featuring compatibility with Natural Gas and LPG and adherence to British Gas specifications.

With an ability to handle inlet pressures up to 75 mbar (30" wg) and an adjustable outlet pressure of 15-23 mbar (6"-9" wg) provided by the standard black springs, the J78R offers unparalleled control. Whether installed in horizontal or vertical pipelines, its robust design ensures reliable performance under varying conditions.

This regulator meets the essential requirements of the European Gas Directive (90/396/EEC), ensuring compliance with safety and operational standards across Europe. Its construction is suited for operating temperatures ranging from -20 to 70°C, making it a resilient choice for a wide range of applications.

For those requiring specific pressure needs, the J78R allows for easy adjustment within the provided range by turning the spring loading adjustment screw located under the top cap. Additional springs can be ordered to tailor the outlet pressure to your exact requirements.

Suitable for Natural Gas & LPG.


Elster Jeavons J78R 1/2" Commercial Gas Regulator - 15-23 mbar Specification

Brand Honeywell Elster
Model J78R
Approvals GAD 2009/142/EC
Connection 1/2" BSP Female
Inlet Pressure Max: 100 mbar
Operating Temperature -20ºC to +70ºC
Outlet Pressure 15 - 23 mbar (6-42 mbar with the purchase of optional springs)
Pattern Straight
Size 1/2"
Suitable Applications Service and appliance regulator for a wide range of domestic, commercial & industrial applications
Product Type Gas Regulator



Elster Jeavons J78R 1/2" Commercial Gas Regulator - 15-23 mbar Features

  • Optimal Pressure Control: Offers adjustable outlet pressure of 15-23 mbar (6"-9" wg) with black springs, ideal for a wide range of commercial, industrial, and domestic applications.
  • High Compliance Standards: Fully complies with the European Gas Directive (90/396/EEC) and British Gas specifications, ensuring safety and reliability.
  • Versatile Installation Options: Can be installed in both horizontal and vertical pipelines, providing flexibility in setup according to space and system requirements.
  • Wide Operating Range: Functions effectively within a temperature range of -20 to 70°C, suitable for diverse environmental conditions.
  • Customisable Pressure Settings: Features an easy-to-adjust spring loading mechanism under the top cap for precise pressure control; additional springs available for different pressure requirements.
  • Durable Thread Connection: Equipped with BSP taper female threads to BS 21 (ISO 7-1) for secure and reliable fittings.

Elster Jeavons J78R 1/2" Commercial Gas Regulator - 15-23 mbar Reviews