Lift Check Valve Manufacturer in India

A lift check valve uses a guided disc that moves vertically relative to its seat. The guided closure arrangement can provide controlled movement in compact high-pressure piping, particularly where stable disc guidance and reliable seating are required. Speciality Valve manufactures lift check valve configurations with horizontal or vertical body patterns, depending on the flow direction, internal guiding arrangement and piping requirements.

Lift Check Valve Material Grades:

Grade	Material Classification
ASTM A216 WCB/WCC	Cast carbon steel
ASTM A352 LCB/LCC	Low-temperature carbon steel
ASTM A217 WC6/WC9	Cr-Mo alloy steel
ASTM A351 CF8	Austenitic stainless steel
ASTM A351 CF8M	Molybdenum-bearing stainless steel
ASTM A351 CF3M	Low-carbon stainless steel
ASTM A890 Grade 4A	Duplex stainless steel
ASTM A182 F51	Duplex forged material
ASTM A182 F316/F316L	Stainless forged material

Lift Check Valve Technical Specifications:

Parameter	Technical Details
Closure element	Guided lift disc
Operation	Automatic
Body	Cast or forged construction
Seat	Integral or renewable
Disc guidance	Guided vertical movement
End connections	Flanged, butt-weld, socket-weld or threaded according to design
Pressure class	Configuration dependent
Size	Configuration dependent
Installation	Horizontal or approved vertical arrangement
Testing	API 598 / applicable equivalent

Lift Check Valve Service Applications:

High-Pressure Process Lines: Provides non-return protection where pressure and flow conditions require guided disc movement.
Steam and Condensate Piping: Used in suitable steam-related services where the valve construction matches operating conditions.
Pump and Compressor Discharge: Prevents reverse flow into connected equipment after shutdown.
Refinery Process Lines: Applied to compatible hydrocarbon and utility services requiring automatic backflow prevention.
Boiler Feedwater Systems: Suitable for selected high-pressure water circuits where guided lift closure is appropriate.

Guided Disc Construction:

Lift disc: Moves vertically away from the seat during forward flow.
Guiding arrangement: Maintains disc alignment during opening and closing.
Seat: Controls the final sealing interface.
Spring assistance: Can be incorporated to accelerate closure in suitable designs.
Body passage: Internal geometry affects pressure loss.
Disc travel: Shorter travel can support faster response than long-stroke mechanisms.
Orientation: Gravity and flow direction must be considered when establishing the approved installation position.

Body and Internal Materials:

Component	Material Options
Body	Carbon steel, low-temperature steel, alloy steel, stainless steel
Bonnet	Compatible pressure-boundary material
Disc	Stainless steel, alloy steel or corrosion-resistant alloy
Seat	Integral, renewable or hard-faced
Guide	Stainless or alloy steel
Spring	Stainless steel or nickel alloy where specified
Gasket	Graphite, PTFE or suitable service material

Pressure and Flow Conditions:

Condition	Impact on Design
High differential pressure	Requires suitable disc and seat loading
High temperature	Requires temperature-compatible body and trim
High velocity	Influences pressure loss and disc stability
Pulsating flow	Requires assessment of disc movement
Vertical installation	Flow direction must support the intended closure mechanism
Reverse pressure	Determines required seating performance

Connection and Dimensional Requirements:

Flanged: Provides bolted removable installation.
Butt-weld: Provides permanent pipeline integration.
Socket-weld: Used for selected smaller-bore piping.
Threaded: Applicable to specified compact installations.
Face-to-face: Established according to the applicable valve dimensional standard.
Pressure class: Must correspond to the mating piping and flange system.

Codes, Testing and Inspection:

API 602: Applicable to compact steel gate, globe and check valves within its scope.
ASME B16.34: Pressure-temperature ratings, materials, testing and marking.
API 598: Inspection and pressure testing.
ASME B16.10: Face-to-face and end-to-end dimensions where applicable.
ASME B16.25: Butt-weld end dimensions where specified.

Share the pressure, temperature, flow direction, line size and connection type with Speciality Valve when specifying a guided lift arrangement to discuss the appropriate disc, seat and body configuration and obtain a quotation.