API 6A Gate Valve (DWS)

Hydro Middle East – DWS Series API 6A gate valves can be widely used in choke and kill manifolds, well testing manifolds, wellheads, tree assemblies, and other flow control equipment. Our valves are engineered to perform in heavily exposed hydrocarbon and abrasive environments through a wide range of temperatures.

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Valve Specifications:

CertificationAPI 6A & API 16C Latest Edition
Size2-1/16” to 7-1/16”
ActuatorsHydraulic & Pneumatic
Pressure Rating2,000 PSI To 15,000 PSI
Material Class

General Service AA, BB, CC &

Sour Service DD, EE, FF, HH

Temperature ClassK through X (-75oF to +350oF)
PSL1, 2, 3, 3G (Gas testing) and 4
Connection TypeFlanged, Studded & Threaded

Trim Chart:

Material ClassBody, Bonnet, End and Outlet ConnectorsValve Bore Sealing Mechanisms and Stems
AAGeneral serviceCarbon or low-alloy steel, or stainless steel or CRA dCarbon or low-alloy steel, or stainless steel or CRA d
BBGeneral serviceCarbon or low-alloy steel, or stainless steel or CRA dStainless steel or CRA d
CCGeneral serviceStainless steel or CRA dStainless steel or CRA d
DDSour service aCarbon or low-alloy steel or CRA b,dCarbon or low-alloy steel or stainless steel or CRA b,d
EESour service aCarbon or low-alloy steel or CRA b,dStainless steel or CRA b,d
FFSour service aStainless steel or CRA b,dStainless steel or  CRA b,d
HHSour service aCRA b,c,dCRA b,c,d

a As defined by NACE MR0175 / ISO 15156

b In accordance with NACE MR0175 / ISO 15156 and

c CRA required on retained fluid-wetted surfaces only; CRA cladding of low-alloy or SST

d CRA as defined in 3.1.22 (Addendum 1); NACE MR0175 / ISO 15156 definition of CRA does not apply

Design Features and Benefits:

  • Designed and manufactured in accordance with API 6A latest edition
  • Metal-to-metal sealing between seat and gate
  • Bi-directional sealing design for versatility and increased service life
  • Upstream sealing design with non-elastomeric, spring-loaded and pressure-energised seals; restricts debris from entering the bonnet cavities and continuously maintains contact between the gate and seat during downstream sealing function to eliminate body cavity clearance
  • Back seating allows the stem packing to be replaced while the valve is under pressure
  • Valve trims suitable for extremely corrosive, high temperature, H2S and CO2 environments
  • Low-operating torque with well-lubricated upper and lower bearings
  • Spring-energised stem packing eliminates the requirement of plastic injection
  • Shear pin protects the stem from over-torqueing
  • Suitable for exploration, testing, stimulation and flow-back services.

Aftermarket Solutions

With our well-equipped infrastructure and strategically located service centres in the region, we perform field service – with or without replacement of internals – and perform all tests as required by API 6AR and customer specifications. We can also mobilise valve workshop services remotely.
We are structured to support your emergency needs for aftermarket service as well as with sustainable services such as life extension programmes, upgrades, asset optimisation, inventory optimisation, inventory standardisation and rationalisation of inventory to bring down your operational costs.