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200 p pressure reducing valve

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200 p pressure reducing valve

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Product introduction:
200p valve models, working principle, product standards, structural drawings, installation instructions. 200p valve professional manufacturers, Shanghai famous brand, national large universal valve manufacturing enterprises, high quality, reasonable price, model complete, pre-sale, sale and professional services! Welcome to contact us!
model
200p in the form of valve structure code: 1, film type; 2, spring film (spring piston); 3, piston; 4, bellows; 5, leveraged.
principle
Throttling principle use the outlet pressure is lower than the inlet pressure. 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 spring force equilibrium pressure, the valve After the pressure was kept constant within a certain error range.
200p valve works: When the valve pressure exceeds the set pressure, pushing the diaphragm spring compression adjustment, pilot valve gradually closes the upper part of the media to reduce the inflow piston, the piston rises so that the main valve in the role of the main valve spring has gradually closed, the valve pressure drop, small changes in the valve pressure, affecting the diaphragm and adjust the balance of the diaphragm spring moves up and down, pushing pilot valve and piston work, move up and down the main valve controlling media flow, so the valve pressure remains stable .
200p valve works: When the valve pipe network without water valve is closed, the pressure ratio is a fixed value before and after the valve; pipe network is enabled when the fire hydrant or water nozzle after the valve before the pressure is greater than the pressure valve when the valve, After the move pushes the piston valve to open, the valve pipe network pressure decreases with increasing flow rate (in accordance with the flow - pressure characteristic curve), until it reaches the equilibrium position, the piston stops moving. When the valve to stop the water pipe network pressure rises because the piston rear end, the piston valve out of balance state forward, the valve closes.
standard
China's current applicable product standards 200p valve "valve general requirements" GB / T 12244-2006, "valve performance test method" GB / T 12245-2006, "200p valve" GB / T 12246-2006, "200p valve" GB / T 21386-2008, "split vacuum regulator valve Pilot" CJ / T 256-2007, building water supply project selection and valve settings should comply with the above related valve product standards.
Installation Notes
Before installation, construction personnel should read and be familiar with 200p manual valve, carefully check the arrival of this product's performance parameters and specifications shall be consistent with the design drawings.
1, the valve group should be installed in the connection pipe passing inspection. Before installation, you should rinse valve upstream pipeline. The residue may not have sand, gravel, slag and other debris in the pipeline. And carefully check whether each valve internal components clean;
2, the installation, the 200p valve group marked the flow of each component should be consistent with the pipe flow direction.
3, the valve should be installed the machine, you are not allowed to disassemble the valve original parts.
4, when the valve installed horizontally down its body or breathing holes should be towards the side, breathing valve orifice when installed vertically should be set in easy to observe, inspect the direction.
5, the front valve group, after the installation of the dial gauge can be carried out after the valve installation is complete.
6, valve components, accessories and pipeline connection between the firm and the bracket should be set. And after the valve installation is complete, before the valve before commissioning, when the control valve is in a closed state.

The next product:ZSMJ- rapid shut-off valve

The previous product:V230 self-reliance type pressure regulator

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