The double stage regulator or so called twin stage is a regulator consisting of two regulation levels, which regulates the inlet pressure, coming from the withdrawal cylinder or tank directly to the inlet pressure of the user appliance.

988 TW Type regulators are designed for Type B of installations. They are to be used outdoors in correct mounting positions with vent-hole turned downwards. In the standard version, 988 TW Type regulators are delivered with vent-hole turned in line with to the outlet fitting.

SPECIFICATIONS

Body and cover: aluminum

Diaphragm: reinforced

Supplying pressure: 25-250 PSI

Cover Screws: stainless steel

Inlet fitting screws: stainless steel

Gas Type: propane

Setting Point: inlet pressure 10 PSI, 140000 BTU, outlet pressure 11 inch WC

Provided Flows: flow based on 10 PSI (0.69 bar) inlet pressure and 20% drop (in accordance with UL144 standard)

Regulator specifications: see following table.