Kerotest Manufacturing Corporation

Kerotest Manufacturing Corporation

7734 LA-1, Mansura, LA 71350, United States

Gauge Valve

Gauge Valve

These valves provide extra pressure outlets, permit line samplings, isolate gauges, provide a bypass, and eliminate extra connections and parts on a gauge leg, thereby reducing cost and increasing dependability. Kerotest/Marsh “N” Series Needle Valves are used in processing plants, oil and gas production, hydraulic and pneumatic equipment, testing labs—anywhere the flow of fluid must be carefully regulated.


Maximum operating pressure: 6,000 psi (42,000 kPa).

Minimum burst pressure: 12,000 psi (84,000 kPa).

Temperature limits: –20° to 200° F (–28° to 93° C).

Flow coefficients (CV): See part number table.

Body and bonnet material: 316 stainless steel or AISI 1045 alloy steel.

Stem material: 316 stainless steel with stainless body, 303 stainless steel with alloy steel body.

Bonnet cap (protective cover): Polyethylene, red.

Packing: Vitron® O-ring and Teflon® backup ring (nylon backup ring for 1″ size).

Handle: Two-prong. Stainless steel for 1/4″ through 1/2″ sizes. Malleable iron for 1″ stainless steel. Cast aluminum for alloy 1/4″ through 1/2″ sizes. Malleable iron for alloy 1″ size.

Connection: National Pipe Thread, meeting specifications of Federal Standard H-28.

Finish: Stainless steel is passivated (surface contamination removed). Alloy steel has a zinc-plated finish.

Assembly: Bonnet-pin lock is standard for all soft-seat needle valves.

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