Lift check valve

A 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. 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.

Lift check valves are suitable for installation in horizontal or vertical lines with upward flow.

The disc is usually in the form of a piston or a ball. In lift Check valves, the disc is precisely guided and fits perfectly into the dashpot. A 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. Lift type check valves are available in straight through, T, or WYE pattern. This type of check valve may be installed horizontally or vertically but those lift checks relying on gravity must be installed so that the disc travel is vertical.

The lift check valve in its closed position offers a more effective shutoff and tighter seal than the Swing Check. Industries such as water treatment, medical, food and chemical processing, petrochemical and agriculture use this particular type of pump to normalize the unidirectional flow of various materials such as water, chemical vapors, air, steam and more.

These valves open in sequence, injecting the gas that forces fluid in the tubing to the surface. MPa)Test pressure Shell strength test 2. Suitable medium water,steam,oil PNiter acids Roil Suitable temperature ≤4≤1≤5Meterial of main parts No. Lift Check Valve PN(MPa)Nominal pressure 1. Forward flow lifts the poppet, opening the valve.

Reverse flow seats the poppet against the orifice, closing the valve. To achieve this performance, the check valve must be mounted in the proper orientation as the bonnet nut is clearly marked. They are suitable for installation in horizontal o vertical lines with upward flow, and recommended in cases of high flow speed. For air, gas and low pressure applications, especially where bubble tight closure is require a valve with rubber faced disc is necessary.

Horizontal lift check valves are used primarily for air, gas and steam services whilst swing check valves are most suitable for water and other liquids. On the high pressure small diameter check valve , the valve ball can be used. The shape of the lift check valve is the same as that of the shut-off valve , so its fluid resistance coefficient is large. Leak-free, tight sealing, protection against reverse flow and minimal flow direction changes are at the core of Flowserve check valve designs.

SS- 53SPlease enter or update the user part number and a comment (optional). With a gas- lift legacy spanning more than years, we deliver an unsurpassed inventory, experience, and knowledge for all intermittent and continuous lift applications.

In addition to a wide range of field-proven valves , we can provide the guidance to enhance efficiency and maximize the life of your equipment. For instance, in boiler aplications, this valve is used as feed water check valve , preventing reverse water flow through the boiler during normal operation or during boiler shutdown. A minimum pressure must be reached in order to lift the disc off of its seat and allow for flow. The valve is used mainly in water applications because of its design. Free Shipping by Amazon.

The pressure of the media is what is used to open the lift check valve , which starts off in a normally closed (NC) position. The Flite Flow Piston Check Valve is a rugge large bore, cast body, piston check valve designed to operate in critical high-pressure and high-temperature environments. Any lift check valve company can design, engineer, and manufacture lift check valves to meet your companies specific qualifications. An easy connection to reach lift check valve companies through our fast request for quote form is provided on our website.

In Piston, or lift , check valves a body-guided disc moves within the body bore. The body guide ensures alignment of the seat and disc when the valve closes.