no
Need more info - what is it for? What is the size of the pipe and the pressure differences you are trying to get?
The easiest way is to install two pressure gauges (If reducing pressure) either side of the reducing valve, you will then have indication of upstream pressure and down stream pressure, of which you can adjust to suit you process.
There are various kinds of pressure valves. Perhaps the 2 most common in homes are the PRV (pressure regulating valve) which is on most incoming water pipes from a city supply. This valve limits the pressure entering the home system, bringing it down from city mains pressure. The second is on every hot water tank, and this is a relief valve, which will open up if the pressure in the tank becomes too high and vent the excess water down the drain.
Double Regulating Valve normally have five functions. 1.Presetting 2.Measuring 3.Isolating 4.Filling 5.Draining
The purpose of both the valves is same - that to maintain a certain level(in a vessel or tank...) Simple Level valve could be referred to an ON - OFF valve where as control valve could be referred to an analog type of valve. On - OFF valve is for a crude control of level, while control valve is used where a fine level control is needed.
it controls the pressure
To regulate the pressure to a pre-determined amount.
When the pressure becomes erratic time to replace
By a pressure regulating valve- or regulator.
no
It is built into the oil pump.
Install a pressure reducing valve
Pressure reducing valve reduces the pressure of fluid upto a predetermined pressure in this case downstream pressure will be obviously lower than upstream pressure but in case of pressure regulating valve it will regulate the pressure( either increase or decrease) depending on the requirement of system at that time.
Back pressure regulating valve is used in ammonia refrigeration plant to maintain the minimum pressure in the evaporator coils. It helps in preventing ice formation / choke upin the PHE chiller.
Need more info - what is it for? What is the size of the pipe and the pressure differences you are trying to get?
If you don't, the pressure may fracture your pipes or joints.
no.