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Lift Check Valve

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Product Introduction：
In the vast landscape of industrial valves, ensuring unidirectional flow and preventing backflow is critical for system safety and efficiency. Among the various check valve types, the lift check valve stands out for its robust design and dependable performance in challenging applications.

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Product Details

Product Overview

A lift check valve, also commonly referred to as a non-return valve, is a self-actuating valve designed to allow fluid to flow in one direction only. Its operation is elegantly simple: the fluid pressure lifts the lift check valve disc (or piston) off its seat, permitting flow. When flow stops or reverses, gravity and backpressure force the disc back onto the seat, creating a tight seal and preventing reverse flow. These valves can be installed in both vertical lift check valve and horizontal lift check valve configurations, depending on the piping layout and application requirements.

Shield™ Lift Check Valve - 10" 150LB Flanged Type

Design Features

Shield^TM Lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.

Lift check valves are two ways of referring to standard lift check valves. These valves utilize a piston-shaped plug rather than a cone, the high-performance designs of cast steel check valves are used to prevent backflow by reacting to the line fluid in your petrochemical, gas or oil system.

spring loading wafer type check valve 3inch 150lb satinless steel

Plate Lift Check Valve

DIN type lift check valve DN200 PN16 check valve with flanged end

EN Z Type Lift Check Valve

API type lifting check valve 4inch 150lb flanged end wcb bod

API T Type Lift Check Valve

Features & Benefits

A lift check valve is commonly used in piping systems in which globe valves are being used as a flow control valve. They have similar seating arrangements as globe valves.

Flow to lift check valves must always enter below the seat. As the flow enters, the disk or ball is raised within guides from the seat by the pressure of the upward flow. When the flow stops or reverses, the disk or ball is forced onto the seat of the valve by both the back-flow and gravity.

Positive Seal Design

Provides tight sealing with minimal leakage, ideal for high-pressure services and critical applications.

Vertical or Horizontal Installation

Can be installed in both vertical and horizontal configurations to suit various piping layouts.

Fast Closing Action

Superior to swing check valves for pulsating flows and high-pressure scenarios with quicker response.

Guidance System

Guide keeps disc motion on a vertical line for proper reseating and consistent performance.

Multiple Configurations

Available in plate, EN Z type, and API T type designs to meet various industry standards.

Application Fields

The primary advantage of a lift check valve is its ability to provide a positive seal with minimal leakage, making it ideal for high-pressure services. A high pressure lift check valve is often specified in critical industries. Common applications include:

Oil and Gas: For pipeline and production services where preventing backflow is essential for safety.
Water Treatment: A lift check valve for water treatment plants helps manage clean and chemical feed lines.
Power Generation: A steam lift check valve is engineered to handle high-temperature steam lines in boilers and turbine systems.
HVAC: An HVAC check valve is used in heating and cooling systems to control chilled or hot water flow.
Pump Protection: Installed as a check valve for pump discharge to prevent damage from backflow and water hammer.

When comparing a swing check valve vs lift check valve, the latter is typically chosen for faster closing action, better suitability for pulsating flows, and superior performance in high-pressure scenarios.

Selecting and Maintaining Your Valve

Selecting the correct valve involves considering factors like the Cv value check valve (flow coefficient), pressure rating, and material compatibility. Standards such as ASME B16.34 check valve specifications ensure quality and dimensional consistency. For noise-sensitive environments, a silent check valve variant may be preferred to reduce the sound of disc closure.

Proper installation is crucial. Understanding how to install lift check valve correctly ensures optimal function and longevity. Common issues like a check valve leaking are often traced to worn seats, damaged discs, or improper installation. Furthermore, selecting a valve designed to mitigate water hammer check valve effects can protect your entire piping system from damaging pressure surges.

Valve Construction & Components

Below is a detailed breakdown of the key components that ensure the reliability and performance of our lift check valves.

the crosss-sectional diagram of din type lifting check valve flanged end

1 Flexible Graphite Gasket: For Class 150 valves, spiral wound gasket for Class 300 & 600 valves, and ring joint for Class 900 & above valves or as an option for the Class 600 valves on customer request.

2 Hinge and Hinge Pin: Provided and mounted so as to permit full movement of the disc.

3 Standard Lift Disc Type: Used in horizontal position for liquid service application or used in vertical position where liquid flow from bottom to top.

4 Cover Bolting: Manufactured of alloy steel in accordance with the requirements of the applicable specifications.

5 Standard Renewable Seal Welded Seat: With stellite 6 while optional screwed-in seat.

As a leading lift check valve supplier, we combine engineering expertise with stringent manufacturing standards. We offer a comprehensive range of valves to meet diverse needs, from standard models to custom-engineered solutions. We are committed to providing not just products, but reliability—ensuring you get the best lift check valve price to value ratio without compromising on performance or durability.

For a reliable solution that ensures flow goes in only one direction, trust our expertise in lift check valves. Explore our catalog to find the perfect match for your system's demands.

Technical Drawings & Resources

Download detailed technical drawings, product brochures, and specifications for our valves. These resources provide comprehensive information for engineers, procurement specialists, and maintenance teams.

?Technical Drawings

Complete set of detailed engineering drawings in PDF format for easy integration into your design projects. Includes dimensional drawings, assembly diagrams, and installation guidelines.