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Hopkinsons Full Bore & Venturi Parallel Slide Gate

»Products»Valves By Brand»Hopkinsons®»Hopkinsons Full Bore & Venturi Parallel Slide Gate
Hopkinsons Full Bore & Venturi Parallel Slide Gate

Hopkinsons Full Bore & Venturi Parallel Slide Gate

We recommend Hopkinsons Full Bore & Venturi valves when a gate valve is required for steam or feedwater duty in medium and high pressure ranges.

Full Bore: The outstanding feature of the parallel slide design is that of maintaining fluid-tightness without the aid of wedging action. No mechanical stress is exerted between the discs, and there are no problems associated with cool-down of the fluid.

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Venturi Design:

The Venturi design is used when a slightly higher pressure drop is acceptable. The well established principle of fluid flow through a Venturi is used in order to minimise pressure drop. Venturi valves incorporate the design feature of an eye follower. In the fully open position the eye follower bridges the gap between the seats thus giving a smooth flow path and completing the Venturi profile.

Key features/benefits:

Fluid tightness achieved by fluid pressure – not from mechanical wedging action thus eliminating thermal binding, Complete flow isolation in either direction, Minimum pressure drop Freedom from leakage independent of temperature or pressure changes, Self-aligning fully supported discs, Inherent self-cleaning action, In-line maintenance, Valves can be offered to incorporate features such as quick closure, live loaded gland, double stuffing box with lantern ring and bleed-off point, back seat, seal welded body/cover joint

Applications:

General purpose stop valve, Main steam and feedwater isolation, Boiler circulating pump isolation, The basic design is also incorporated in valves for other duties such as: Feedwater heater protection; Feed pump leak-off; Nuclear Applications (ASME Section III, Class 1, 2 & 3) (Described in other publications available on request); Regulating duty with V-ported seat

Design Standards:

ASME B16.34. Alternatively, valves can be supplied to other national standards, ASME section IIIRCC-M

Design Ratings:

ASME Class 150 to 4500

Size Range/Dimensions:

15 to 1200 mm (1/2″ to 48″)

Temperature range:

29C to 620C (-20F to 1150F)

Materials:

Carbon Steel, Alloy Steel, Stainless Steel, Bronze

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    About Us

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    Trillium Flow Technologies™, founded on a legacy of premier products and service, will continue to provide mission critical valves, pumps and aftermarket services in oil and gas, power generation, water and wastewater, and general industry.

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