Available Sizes
Regular: 3/8″, 1/2″, 3/4″, and 1″

Diaphragm: 4″ Molded, roll-out polyester fabric reinforced Buna-N with integral relief seat and case flange seal
Vent and Valve: Precision-fit polypropylene valve and seat, threaded 3/4″ or 1″ NPT
Adjustment Screw: ABS cycolac
Closing Cap: ABS cycolac with internal relief valve stop and a hole for available tamper seal wire
Corrosion Protection: Chromate converted castings, topcoat enamel,optional E-coat
Internal Relief Valve: Set to relieve at 7″ w.c. – 10″ w.c. above normal outlet pressure setting of 7″ w.c.

For use on other compatible gases, flow capacities must be adjusted using the following correction factors:
Type Gas Sp Grav Corr Factor
Air 1.0 0.77
Propane 1.53 0.63
Propane-air 1.2 0.71
Nitrogen 0.97 0.79
Dry CO2 1.52 0.63

For other non-corrosive gases, the Correction Factor is equal to: √0.6/Specific Gravity

Mounting Positions
These are multi-poised regulators, designed to that they can be mounted in any piping orientation.

Sensus residential service regulators have a simple, modern design and rugged construction, offering greater dependability, precise pressure control, and outstanding performance. These are multi-poised regulators, designed to that they can be mounted in any piping orientation. The union nut style connection of the 143-80 makes it especially easy to adjust.

Diaphragm: Nylon fabric reinforced Buna-N with full 26 in2 effective area

Vent and Valve: Precision-fit polyethylene valve and seat, threaded 3/4″, 1″, 1=1/4″ NPT

Corrosion Protection: Cases dip primed chromate conversion coating, topcoat enamel

Internal Relief Valve: none

Sensus residential service regulators have a simple, modern design and rugged construction, offering greater dependability, precise pressure control, and outstanding performance. These are multi-poised regulators, designed to that they can be mounted in any piping orientation. The union nut style connection of the 143-80 makes it especially easy to adjust.

Diaphragm: Nylon fabric reinforced Buna-N with full 26 in2 effective area

Vent and Valve: Precision-fit polyethylene valve and seat, threaded 3/4″, 1″, 1=1/4″ NPT

Corrosion Protection: Cases dip primed chromate conversion coating, topcoat enamel

Internal Relief Valve: Set to relieve at approximately 7″ w.c. above normal outlet pressure setting

Available Sizes
Regular: 1-1/4″, 1-1/2″, 2″
Flanged: 2″
No IRV

Sensus large capacity industrial service regulators are designed and built for commercial, industrial, and gas distribution use. As a result of the collar connection between the fully inter-changeable bodies and the diaphragm case, they have remarkable field versatility. They are right at home in such places as factories and foundries, district regulator stations, commercial laundries and laundromats, motels-hotels and apartments, bakeries, restaurants, schools, churches and hospitals.

The versatile 243 is used for all kinds of gas fueled equipment .. .boilers, burners, furnaces, ovens, heaters, kilns, engines, air conditioners, etc.
Remarkable field versatility results from the union connection between the fully interchangeable bodies and diaphragm-case assemblies. They are easy to install, adjust, inspect, and service in all piping arrangements.
Depth is affected by mounting position, flanged or screwed connections, diaphragm case size, and whether or not the unit is HP or standard.

Mounting Positions
These are multi-poised regulators, designed to that they can be mounted in any piping orientation.

Other Cases
243 Regulators are mainly used on natural gas. However, they perform equally as well on LP gas, nitrogen, dry CO2 , air and others. Contact us for special construction which may be available for certain corrosive gases.