Piston Type Lift Check Valve

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MOQ : 5 Units

Piston Type Lift Check Valve Specification

Structure
Lift check valve with piston type construction

Material
Cast Steel / Stainless Steel / Alloy Steel / Carbon Steel

Power
Manual

Pressure
PN16 to PN160 / 150# to 2500#

Media
Liquids / Gases / Steam

Working Temperature
-29C to 425C

Port Size
to 24 (DN15 to DN600)

Surface
Painted / Self-finish / Galvanized

Shape
Flanged / Screwed / Butt Weld

Application
Industrial piping, steam, water, oil, gas

Seat Type
Renewable / Integral

Body Type
Straight-through

Packing
Graphite / PTFE

End Connection
Flanged, Screw End, Butt Weld

Service
Suitable for high temperature and high pressure lines

Color
Industrial grey or per customer requirement

Standard
ASME / ANSI / DIN / BS

Inspection & Testing
API 598 / EN12266

Disc Type
Piston/Disc construction

Size Range
DN15 to DN600

Design Features
Non-return, low pressure drop, reliable sealing

Operation
Automatic by flow pressure; manual override not required

Corrosion Resistance
Available with special alloys and coatings

Piston Type Lift Check Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About Piston Type Lift Check Valve

Piston Type Lift Check Valve is a precision tool designed and developed in our full-fledged production site making the best use of pioneering tools and techniques. The check valve has got rugged construction and resilience and therefore, it can endure chemicals, abrasion, and shear forces. Due to reliable performance and long operational life, Piston Type Lift Check Valve is widely acclaimed among our customers. The valve finds extensive applications in industrial applications including pressure control, fluid regulation, distribution among others.

Main Features :

Bolted Body-Cover design for valves from Class 800 up to Class 2500. Valves with welded bonnet also available on request
Screwed with a seal-welded body-bonnet design for valves of Class 2500
Bolted body-bonnet joints provided with spiral-wound stainless steel gasket and graphite filler for maximum protection against leaks
Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire reinforcement and corrosion inhibitor
T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598
Rolled ACME thread on stem for smooth operation
Tapered shoulder on the stem for back seating
Self-aligning type gland assembly with stud-and-nut tightening
Integral hard-faced body seat for globe and check valves
Spring-loaded disc on check valves suitable for no horizontal applications too
Gate and globe valves can be offered with electrical actuators
Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss and resistance to corrosion
Valves can be offered to NACE MR-0175 and other special NACE requirements

Reliable Non-Return Function

This valve features a piston/disc construction that ensures non-return operation. Its automatic flow-pressure activation eliminates the need for manual intervention, which enhances safety and reduces operational effort in varied industrial settings, including steam and gas pipelines.

Exceptional Sealing and Minimal Pressure Loss

Offering renewable or integral seat types and advanced sealing mechanisms, the valve minimizes leakage risk while ensuring a low pressure drop. This contributes to overall system efficiency and dependable, long-term performance.

Versatile Applications and Robust Construction

With a size range from DN15 to DN600 and robust materials like cast steel and special alloys, this check valve meets an array of industry requirements. Corrosion-resistant coatings, industrial-grade packing, and broad temperature and pressure tolerances make it suitable for demanding applications.

FAQ's of Piston Type Lift Check Valve:

Q: How is the piston type lift check valve operated in a typical pipeline?

A: The piston type lift check valve operates automatically, responding to the flow pressure in the pipeline-no manual override is necessary. When fluid flows in the correct direction, it lifts the piston/disc to open, and if the flow reverses, the piston automatically returns to the seat, effectively blocking backflow.

Q: What benefits does the piston type lift check valve offer for high temperature and pressure applications?

A: These valves are specifically designed for robust operation under high temperature (up to 425C) and high pressure (up to PN160/2500#) conditions. Features such as graphite/PTFE packing, corrosion-resistant materials, and reliable sealing ensure consistent performance and long service life in challenging environments.

Q: When is it recommended to use a flanged, screwed, or butt weld end connection?

A: Selection depends on pipeline requirements: flanged ends are used for easy installation and maintenance, screwed ends for smaller size lines, and butt weld ends are preferred for seamless integration in high-pressure or high-temperature pipelines, providing leak-proof strength.

Q: Where can the piston type lift check valve be deployed within industrial systems?

A: This valve is ideal for inclusion in industrial piping networks transporting liquids, gases, or steam. It is suitable for use in industries like power generation, oil & gas, chemical processing, water treatment, and any application requiring dependable backflow prevention.

Q: What is the process for inspecting and testing these valves before delivery?

A: Every valve undergoes stringent inspection and testing according to API 598 or EN12266 standards. This includes pressure, leakage, and functional tests to certify compliance with international quality requirements, ensuring reliable performance upon installation.

Q: How does the corrosion-resistant option enhance valve longevity?

A: Corrosion-resistant constructions, achieved through the use of special alloys and protective coatings, safeguard the valve against deterioration from harsh fluids or external environments. This leads to prolonged service intervals and reduces maintenance costs.

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