Class Number Description
3331-04
REGULATORS (GAS) - Service

COVERAGE:

These regulators are designed to deliver natural gas from high pressure (2 psig to 125
psig) gas distribution systems, reducing the pressure at all times and under all
conditions to a standard nominal delivery pressure adjustable between 5 – 9 inches of
water column.

The regulators identified in this class have a maximum size of NPS 1-1/4 in
with a maximum capacity up to and including 250 SCFH. 

REQUIREMENTS:

CSA 6.18 Service Regulators for Natural Gas

The capacities are listed in standard cubic feet per hour when employing natural gas
having a total heating value of 1,000 Btu per cu. ft. and a specific gravity of 0.64.

Sizes shown are for standard female tapered pipe threads unless otherwise indicated.

/ct