check valve

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check valve

A valve that permits fluids or gases to flow in just one direction. Check valves are used in infusion sets to prohibit backflow of fluids during intravenous therapy.
See also: valve
References in periodicals archive ?
My bet is that if the all the companies involved in molding spent their six-sigma budgets on improving the design of the non-return valve, the result would be a far more reliable device.
It is possible for a non-return valve to work properly but still not hold a cushion due to wear on the inside diameter of the barrel.
Introducing "Right-Sized" injection units consisting of barrel, end cap, screw, non-return valve, heaters, thermocouples, and barrel covers, supplied in a single crate, assembled and ready to install.
Check the non-return valve and machine barrel to be sure they are in specification.
Tenders are invited for 3/4 Check Valve Non-Return Valve Fitted In Between Independent Brake Valve Inlet Air Pipe Line Of Ng Diesel Loco Of W / Kg.
Then a plug is installed in front of the injection unit to "dead head" the press, Next, the newly patented non-return valve locks in the open position.
Unit transparent plastic polymer with non-return valve.
The VIP Mixer can be up to 3 D long and can be used either in the mixing section of an extruder or as a mixing non-return valve in injection molding (see photo).
Based on the 110-ton model EC110 toggle-clamp machine, the new LIM system has an Xaloy 800 tungsten-carbide barrel, special LSR screw that prevents backflow during injection, auto-closing non-return valve, pneumatic shut-off nozzle, water-cooled barrel and nozzle shut-off, and four-zone mold heat control.
Improved shot repeatability and decreased part-weight variation are benefits claimed for the new CloserNRV non-return valve from Van Dorn Demag Corp.
In addition, Dray has licensed Xaloy to make and sell his APV non-return valve for injection molding.
Group I - Counters, cold water, DN 20 E[cedilla] 40 mm, driven turbine jet, dry mechanism and internal non-return valve incorporated;