throttling valve

throttling valve

[′thräd·əl·iŋ ‚valv]
(ordnance)
Part of a variable recoil system of a gun, it is a spring-loaded valve through which recoil oil must flow during recoil; as the gun is elevated, the spring pressure is increased by means of a control arm; the valve thus offers greater resistance to the flow of recoil oil and the length of recoil is reduced; in a similar manner, depressing the gun decreases the spring pressure of the valve, with less resistance to oil flow and hence greater length of recoil.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

throttling valve

In a piping system, an orifice designed to control the rate of flow through it.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
After leaving the condenser the refrigerant is at medium temperature and high pressure and then it enters the throttling valve. In the throttling valve the pressure and the temperature of the refrigerant is reduced drastically and suddenly.
The saturated liquid (7) is divided in two parts (8, 9), one part (9) is passed through throttling valve (TV1) where pressure is reduced to evaporator pressure (10) and feed to evaporator (E1), and second part (8) is pumped by pump (P1) to the HRVG of RC cycle.
Then, there would be a final open loop closing of the throttling valve at a fixed position to dampen the impact even further.
Variable frequency drives (VFDs) from GE regulate motor speed to control the flow and pressure of blowers or pumps without dampers or throttling valves.
Replace constant speed pumps: AC variable speed pumps replacing constant speed pumps with throttling valves make good economic sense in many applications.
It replaced the throttling valves of Dolphin Cove filtration pumps with adjustable speed drives, or ASDs.
Thus, this dynamic-mixing principle allows helium to be introduced to the leak detector without throttling valves.
Pump screens have a tendency to plug with felt hairs, fiber, lunch sacks, etc.; all of these act as throttling valves at the vacuum pump.