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(1) Purpose : To test check valve No.1 for tightness.

(2) Lift off the first check valve cover.

(3) Particles from worn piston seal caught in check valve.

(4) Reassemble the Check valve modules.

(5) Media type check valve for preventing backflow.

(6) Reassemble the check valve module in the reverse order.

(7) This paper introduces a refluence protection system for check valve, it can enhance the using efficency of the airflow power.

(8) The cracking condition of hydraulically controlled check valve in locking circuit is studied via problems encountered in practice and a method for correct selection is presented.

(9) If the pump does not export loaded check valve, high pressure water will reverse back pumps, impeller pumps water at high pressure have a reverse impact.

(10) At the entrance to the water with check valve to prevent water at night by the collector current, and cause the heat loss.

(11) Seat discs shall be reversible to extend check valve life.

(12) Check valve is also called the reflux valve, non - return valve.

(13) A check valve may be required ahead of the backflow preventer.

(14) The check valve shall utilize single torsion spring design to minimize pressure drop through the assembly.

(15) A double check valve assembly shall be installed at each noted location.

(16) Double Check Valve Assembly shall be installed at each noted location.

(17) The Straight Sided Insert is a threadless check valve designed to be inserted into any cavity where a check valve is needed and threads are not desired.

(18) Watts Series 709 Double Check Valve may be installed in either a vertical or horizontal position.

(19) The movements of check valve located at Valve valve seal on the Butterfly valve seat surface.

(20) Test ports shall have internal check valve and be equipped with caps.

(21) Under the effect of check valve, synchronization phenomenon is caused in the process of water hammering in long distance pipelines.

(22) A built-in butterfly-shaped check valve for an insulating jacket serves heat insulating function.

(23) Lift check valve with a spring load can withstand light valve flap , flap valve lift is not high.

(24) Results show that simple structure aerovalves can be applied in PDE because it has both functions of check valve and air-blast atomizer. Sentencedict.com

(25) A leeward side of the box is provided with at least one air outlet having a vent check valve.

(26) Please refer to "Flow Calculations " in the Technical Data section for swing check valve flow coefficient (Cv) and equations to calculate pressure drop through the valve.

(27) The debris is prevented from flowing back out of the bailer by a check valve.

(28) The valve not only possesses the functions of ordinary check valve, but also allows the inclinometer to pass through it smoothly without affecting the deviational survey.

(29) Safety Valve, Ball Valve, Needle Valve, Y - Control Valve, Y Cylinder Valve, Check Valve Cock.

(30) Never reverse flow through a regulator or rely upon it to act as a check valve.