USG Model 143-80 Domestic Service Regulator

Deliver Precise Pressure Control.

The USG 143 models are built to perform. They feature precise pressure control, as well as outstanding performance and dependability. These gas regulators are also available with a low-pressure cut-off.
The Model 143 regulators are used for both residential and small commercial and industrial applications, such as burners, furnaces, ovens, heaters, gas engines and others.
They are available with a variety of body sizes, loading springs and orifice sizes. These compact regulators also provide the outlet pressure ranges and the capacities to fit most applications for a 6” service diaphragm regulator.

The Model 143-80-2 regulator conforms to the ANSI B109.4 and CSA 6.18 standards and is approved with Measurement Canada.

Benefits:
• Installs in numerous mounting positions
• Delivers precise pressure control

Features:
• Low-pressure cut-off available
• Internal relief valve available
• Seven outlet pressure ranges

Technical Data:
Valve Body: Cast Iron – 125 psi working pressure
Spring and Lower Case: Die-Cast Aluminum
Orifice: Aluminum
Fulcrum Pin: Stainless Steel
Valve Seat: One piece molded Buna-N
Valve Stem: Fiberglass reinforced nylon
Throat/Support/Stem: Acetal insert
Diaphragm Plate: Plated Steel
Diaphragm: Nylon fabric reinforced Buna-N with full 26 in² _effective area
Vent and Valve: Polyethylene valve and seat, 1” NPT vent
Corrosion Protection: Cases dip primed chromate conversion coating, enamel topcoat
Internal Relief Valve: Set to relieve at approximately 7-10” w.c. above normal outlet pressure setting

Downloads:

USG Model 143 Brochure
USG Model 143 Installation and Maintenance Manual
USG 143 LPCO Brochure
USG General Safety Instructions for Gas Regulators