The Calvary C1-EX cast-body Expanding Wedge Through-Conduit gate valves are designed for
corrosive or erosive Pipeline service in oil and natural gas wellhead or other critical service
applications in ANSI 150 to 1500 Class operating pressures.

All Model C1-EX expanding gate valves are API 6D latest edition monogrammed equipment and are available in bore sizes ranging from 2” through 36”. The movement of the parallel expanding gate provides a bubble-tight mechanical seal to assure positive shut-off while reducing wear between the
sealing surfaces and extending the valve life. This provides a superior valve in demanding applications including those requiring provable zero-leakage in Double Block and Bleed service. The valves are designed for parts to be field repairable in line. These features resulting from the rugged design make it suitable for both common and more difficult applications throughout the energy industry.

Sizes: 2″ thru 36″

Pressure Classes:

150, 300, 600, 900, 1500

Operating Temperatures:

-20F to +850F (-29C to +454C)

Flanged, Weld, Weld by Flanged

API 6D Pipeline Gate Valve

Full Port, Through Conduit,

Double Block & Bleed



Model C1-EX

API 6D parallel

expanding wedge

gate valve with

bubble tight seal and

Double Block and

Bleed closure.

• Cast Steel Construction • Positive (Bubble Tight) Closure • Mechanical Sealing/Operation • High
Reliability/Repeatability • Fire safe Design • Field repairable in line • External Thermal Body Relief •
Extensions and Adaptations for Actuation available

Emergency Service is available 24 hours a day, seven days a week.

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