Gate Valves are the most commonly used shut-off valve in the industry today. They are used where minimum pressure drop and bi-directional on-off service is required. Gate valves arenot designed for throttling service. Prolonged use in the partially open position may lead to premature wear and damage to the seating surfaces.
Our standard offering has a rising stem with an outside screw and yoke
Back-Seat Bushing Gland can be Re-packed in-situ Wedge Clear of Flow in Full Open Position Low Pressure Drop across valve
Range of materials to suit Pressure Classes
Flexible wedge as standard (Solid Wedge available on request) Reduces the likelihood of the wedge sticking Fully guided wedges
Seat Ring is seal welded to eliminate potential leak paths. (Renewable seat rings can be supplied on request.)
One piece stem, forged tee-head connection Rolled or cut ACME threads subject to valve size Polished on the packing contact area Ensures long life & optimal tightness Engineered stem break-point above packing area Ensures sealing integrity to atmosphere.
The Gland Flange & Packing Gland are manufactured in two separate pieces Adjustable gland in service Optional live loaded gland can be specified Backseated design allowing the gland packing to be replaced in situ.
Packing contains corrosion inhibitor to avoid stem pitting. Deep stuffing box design ensures long packing life.
As Standard production covers valves with: Flanged ends to ANSI B16.5 RF Raised face serrated finish or, On request, with any other type of finish RTJ Ring Type Joint
Customer mustspecify the type of schedule required, or classof pipe, or diameter and bore.
Special end connections on request.
Face to Face dimensions to ANSI B16.10.
Handwheels designed for ease of operation.
Valves can be supplied with bevel gear operators
On request valves can be supplied equipped with, or prepared for actuators
Electric/
Pneumatic/
Hydraulic (according to customers' requirements).
Customer is to advise all service requirements and applicable specification with enquiry.
By-passes, locking devices, chain wheels, floor stands, special extension stems and others.
Standard Testing is in accordance with API 598. Customer specific testing by agreement.
