gas valves valve: Pilot valve

When the high pressure gas valve output diameter or larger, with a direct regulator regulator spring, the spring stiffness necessarily too large, flow changes, the output pressure hydraulic cutting machine fluctuations, the structure will also increase the size of the valve . To overcome these shortcomings, can be pilot valve. basically the same gas valves pilot valve works with direct-acting. pilot valves used is determined by a small direct-acting valve sealing fitting supply. If the small direct acting pressure reducing valve mounted inside the body, it is called an internal pilot valve; If small direct acting pressure reducing pilot operated safety valve installed in the main body outside, then called external pilot valve . Compared with the bsp thread fittings direct-acting valve, the valve is increased by the nozzle 4, 9 and fixed orifice baffle chamber consisting of a nozzle flapper B amplification link. When the distance between the nozzle and the baffle when small changes, it will cause pressure in the chamber B significant changes roots occur, thus causing the diaphragm 10 has a larger displacement, to control the vertical movement of the spool 6, the inlet 8 large or open valve port off small, to improve the sensitivity control on the spool, which improves the regulation accuracy....

The valve is in the pipeline fluid delivery system control unit

The gas valve is in the pipeline fluid delivery system control unit, which is used to change the channel section and flow direction of medium, with diversion, off, throttling, non-return, diversion or overflow relief functions. For fluid control valves, valves shut-off valve from the most simple to the most complex automatic control system used in its many varieties and specifications, the valve nominal diameter from large to tiny instrument valve diameter up to 10m industrial pipeline valves. Can be used to control the water, steam, oil, gas, mud, a variety of corrosive media, liquid metals and radioactive fluids and other types of fluid flow.

gas valves are safety devices supporting a new gas pipeline project

Used to cut, turn, regulate the gas pipeline, with good sealing performance and off control characteristics. For a variety of city gas medium pipeline gas, liquefied petroleum, natural gas, oxygen, etc.. Classification Gas valve widely used variety,bsp port classification will be more. The total can be divided into two categories: The first automatic valve: the ability to rely on the gas itself and the action of the gas valve valve itself. Oxygen rapid shut-off valve Oxygen rapid shut-off valve Such as check valves, control valves, pressure reducing hydraulic valve manifold valves and so on. The second class driver valve: With manual, electric, pneumatic valves to manipulate the action. Such as gate valves, globe valves, throttle valves, butterfly valves, ball valves, plug valves, etc.

gas water heater gas valves work status

Open the total gas valve, open the gas valve, gas valve pressure difference into A, B two-bedroom; open water valve, cold water through the water main valve all the way into the water pressure Interlock SAE Flange valve, the other way flow heat exchanger, the rubber membrane on both sides pressure range, the pressure to the base film movement, water vapor driven ejector linkage movement to the left, the middle of the toggle lever plunger ejector left with the power turned on the power switch.
Immediately after power electric controller high-voltage pulse generating sparks, while a powered miniature solenoid valves, gas valves of the gas burner valve into a small fire,bsp thread port and mating stud end a spark ignited a small fire. Water vapor movement to the left in place when the mandrel linkage, to open a valve, the valve 2 is not open at this time since the gas does not enter the main burner.

Range dual safety valves Features

Range dual safety valves Features
1, small size, light weight.
2, the pressure detection device using a bellows, good durability.
3, the pressure can be adjusted by rotating the plastic hand wheel, without tools.
4, built-in filters to protect against dust and impurities affect control valve performance.
5, thin film-type valve using threaded connections, easy installation.
6, the valve seat are made of stainless steel, long service life.

Direct role in regulating valve

By range valves, the inlet pressure is reduced to a desired outlet pressure, and rely on the energy of the medium itself, so that automatically maintain a stable outlet pressure safety valve. From the point of view of fluid mechanics, pressure reducing valve is a local resistance to change spending components, that is, by changing the throttle area, so that the kinetic energy of change velocity and the fluid, resulting in different pressure loss, so as to achieve the purpose of decompression. And then rely on regulation and control and regulation systems, so that fluctuations in the valve pressure equilibrium with the spring force, so that the valve pressure is kept constant within a certain error range.