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Integral Flanged End Valves


Bonney Forge forged steel integral flange valves are available in two bonnet designs. The first design is the Bolted Bonnet, with male-female joint, spiral wound gasket, made in F316L/graphite. Ring joint gaskets are also available on request. The second design is the welded bonnet, with a threaded and seal welded joint. On request a full penetration welded joint is available. Integral flanged end valves are available in gate, globe, piston check, ball check, and swing check design configurations. Available in class 150 integral flange valves through class 2500.

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Product standards & features

Applicable standard range

SIZE 1/2 NPS - 42 NPS
CLASS 150 - 4500

Applicable standards

Design API 602, API 594, ASME B16.34
Inspection & testing API 598
Marking MSS SP-25
Fugitive emission API 624, ISO 15848, TA Luft

Applicable end finishes

Face to face ASME B16.10
Socket weld ASME B16.11
Screwed ends (NPT) ASME B1.20.1
Flanged ends ASME B16.5
Butt welding ends ASME B16.25

Product features

1 Standard construction of body-bonnet connections are bolted bonnet or welded bonnet type.
2 Full die forged structure for all pressure containing parts.
3 Flanged valves are provided with flanged integral with the body forgings.
4 Standard gasket design for bolted-bonnet valves is spiral wound type up to class ASME 1500. Ring Joint gaskets are standard for ASME 2500 and above. SPW/RJ are available on request for all pressure classes as option.
5 Design of disc and hinge assembly to generate a closing moment to provide adequate closure and sealing at low pressures.
6 Sealing surfaces are machined to the tightest tolerances and lowest roughness and to ensure trouble free shut off and cycling.
7 Best-in-Class CV values.
8 Low cracking pressure design.