COUPLING & REPAIR

Style 275 Meter Valve

The Dresser Style 275 gas meter valve is a maintenance-free, compact and reliable positive shutoff valve. Rated for operating pressures from inches of water column to 175 psig, the Style 275 is available in sizes 3/4”, 1” and 1-1/4”, Lock-wing FIPS, and insulated union lock-wing configurations.

Operating Principle
The Style 275 incorporates a spring-loaded seat, plus a selfsealing feature that increases sealability as operating pressure increases. At low pressures, the leaf-type springs exert pressure to force the elastomeric-coated insert seals into a positive sealing position.

At higher pressures, the valve is designed to employ the gas line pressure to impose a supplemental compressive loading against the seals. The higher the line pressure, the greater the sealing force. Since this force can be exerted on either seal, the valve is non-directional.

Standard Coating
The Style 275 is supplied with black e-coat or zinc phosphate finish as standard that can be used as either the prime coat or the sole coating, depending on service conditions. Saltspray tests have shown these coatings to provide excellent corrosion resistance.