Jeavons J78R Low Pressure Regulator
The J78 range is a compact, accurate and economical regulator. It is suitable for a wide range of commercial and industrial applications, including such OEM equipment as boiler and burner trains.
Control of Outlet Pressure
The outlet pressure can be easily and accurately adjusted by turning the spring adjustment unit located under the top cap.
Normal Operating Temperature
The J78 range is suitable for operation in a wide range of temperatures from -4°F to +158°F
Sizes
- ½"
- ¾"
- 1"
Application
The J78 range is suitable for inlet pressures up to 5psig. All units are designed for natural, liquid petroleum and manufactured gases and can be installed in horizontal or vertical pipelines.
The regulators may be utilised for domestic meter service applications with inlet pressures up to 30”wc. High efficiency has been obtained by careful design of the internal gasways. Thus ensuring maximum flow with minimum pressure loss.
Pressure
- Maximum Inlet Pressure: 100 mbar (PSIG)
Dimensions & Weights

Size | A R | B R | C R | D R | E R | Weight R |
---|---|---|---|---|---|---|
½" | 3.93" | 3.23" | 1.18" | 3.93" | 4.41" | 0.5Kg |
¾" | 3.93" | 3.23" | 1.18" | 3.93" | 4.41" | 0.5Kg |
1" | 3.93" | 3.23" | 1.57" | 4.13" | 4.80" | 0.5Kg |