DEMCO Butterfly Valves

Chemical and petrochemical
Agriculture
Oil and gas drilling and production
Food and beverage
Water and waste water
Cooling towers (HVAC)
Power
Mining and materials
Dry bulk handling
Marine and government




DEMCO Series DM ANSI/API Gate Valve
Designed for dependable, heavy duty per-formance in abrasive service conditions, DEMCO® DM gate valves are commonly selected for a number of oilfield applications, including:

Pump manifold block valves
High pressure mud mixing lines
Standpipe manifolds
High pressure drilling system block valves
Wellheads
Well treating and frac service
Production manifolds
Production gathering systems
Production flow lines

The Demco series DM gate valve is offered in two basic pressure classes: The ANSI series valves conform to the standard flange dimension and pressure requirements for ANSI classes 400, 600, 900 and 1500. Except for the 4" class 1500, these valves are designed with economical, double acting threaded stem & gate. The 4" 1500 use the same rising stem design used in the 4" 3000 API series valve. The API series valves conform to the standard flange and pressure requirements for API classes 2000, 3000 and 5000. Except for the 4" and larger API 5000, these valves are designed with heavy duty, double acting rising stems. Both series are offered with threaded, weld and flanged end connections. End connection availability varies by size and pressure based on market requirements. Some sizes in the ANSI series are offered with grooved end connections.






DEMCO Series DM 7500 PSI
Meeting the tough, 7,500 psi working pressure demands of deep well drilling is the Demco DM 7500 gate valve. The DM 7500 comes to this market with proven technology from the industry leader.When the market demanded a 7,500 psi drilling mud valve, the Demco DM 7500 gate valve was introduced to meet the challenge. This is fitting since Demco DM API gate valves (2,000 to 5,000 psi) continue to be the premium drilling mud valves of choice, as they have been for more than 30 years.

The Demco DM 7500 is available in sizes 2" to 6" with butt weld end or flanged end connections. Engineered specifically for the high pressure requirements of deep well drilling, the Demco DM 7500 gate valve is chosen for the following drilling applications:

Standpipe manifolds
Pump manifold block valves
High pressure drilling system block valves
High pressure frac service





DEMCO Series DT/DB
DEMCO® Aluminum Bronze and Stainless Steel Products are designed especially for the demanding requirements of corrosive CO2 injection and waterflood applications in the enhanced oil recovery market. Demco Series DT gate valves are available in sizes 1" to 4". Demco Series DB gate valves are available for 6" and 8" size applications.