the Globe valve is used for throttling flow control.  Shut off is accomplished by moving the disc against the flow stream rather than across it as in the case with a gate valve.  The flow pattern through a globe valve involves Changes in direction, resulting in greater resistance to flow, causing high Pressure drop.  The globe valve is an excellent valve to use for on-off Service, but is highly suited for frequent cycling and control of fluids Anywhere in amount or volume between the open and closed positions.

the Globe valve must be installed in the proper relation to the media flow as Indicated by the flow direction arrow marked on the valve body.  this Valve is considered uni-directional and must be installed with the pressure Side or inlet under the seat.

QDV Valves globe 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

?  Bolted Bonnet – Confined Bonnet Gasket

?  Outside Screw & Yoke  (OS & Y)

?  Full Port

?  Metal / Renewable Disc Available

?  Special Trims available

?  Teflon (Braided or Chevron), Flexible Graphite or other packings and gasket Combinations available

?  Flanged, Butt Weld, Threaded and Socket Weld available

?  API 623 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 623  Steel Globe 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 and Unions

MSS SP-42  Corrosion Resistant Gate, Globe, Angle and Check Valves

MSS SP-61  Pressure Testing of Valves