the Gate valve is the most commonly used valve in industry.  Gate valves are Well suited for water, oil and gas service as well as a variety of other Fluids.  They are intended for on‐off flow control and should only be used in The fully open or fully closed position.  When fully opened, fluid through The valve is in a straight line, resulting in minimum pressure drop across the Valve.  Gate valves are bi‐directional and can be used for flow in either direction.

QDV Valves gate product line are manufactured as full port, with threaded, socket‐weld, Flanged and butt weld ends.  Pressure classes include 150 through 1500.  from our Houston, Texas manufacturing facility, we offer valves in the following materials: CF8M, CF3M, CF8, CF3, CK20, CG8M, CF8C, CN7M, CW12MW, CY40, CW6MC, N12MV, N7M, M35‐1, CZ100, CD3MN and many others.  

 

DESIGN HIGHLIGHTS

?  Double Disc Available for Class 150
?  Round Bonnet Design Standard in Class 150, 3" thru 8"
?  Special Trims Available
?  Solid and Flexible Wedge Available?" thru 2"
?  Flanged, Butt Weld, Threaded and Socket Weld End Connections Available
?  API 600 or API 603 Available
?  Valve Design per ASME B16.34

 

All Valves are manufactured in accordance with the latest industry standards listed below as applicable:

ASME B16.34 - Valves, Flanged, Threaded and Welding End
API 603 -Corrosion Resistant, Bolted Bonnet Valves, Flanged and BW Ends
API 600 -Steel Gate Valves – Flanged and Butt Welding Ends, Bolted Bonnet
ASME B16.10 -Face‐to‐Face and End‐to‐End Dimensions of Valves

ASME B16.11 - Forged Fittings, Socket Welding and Threaded

ASME B16.25 - Butt Welding Ends
ASME B16.5 - Pipe Flanges and Flanged Fittings
API 598 - Valve Inspection and Testing
MSS SP‐25 - Standard Marking System for Valves, Fittings, Flanges
MSS SP‐42 - Corrosion Resistant Gate, Globe, Angle and Check Valves
MSS SP‐61 - Pressure Testing of Valves