Y44H-16C bellows pressure reducing valve

NegotiableUpdate on 02/15

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Overview

Y44H bellows pressure reducing valve is used on pipelines with non corrosive media such as steam, air, and water at temperatures below 200 ℃, to maintain a constant pressure of the medium passing through the valve body to meet work requirements. The inlet pressure P1 in front of the valve ranges from 1.0-0.1MPa, and the outlet pressure P2 behind the pressure reducing valve ranges from 0.4-0.05MPa. The pressure difference between the front and back of the valve should not exceed 0.6MPa and should not be less than 0.05MPa.

Product Details

Y44HBellows pressure reducing valveUsed for temperature in200℃On the pipelines of non corrosive media such as steam, air, and water, the pressure of the medium passing through the valve body should be kept constant to meet the working needs. Inlet pressure in front of the valveP1from1.0-0.1MPaThe outlet pressure after the pressure reducing valveP2for0.4-0.05MPaThe pressure difference between the front and back of the valve shall not exceed0.6MPaIt should not be less than0.05MPa.

Principle and Structure Explanation of Bellows Pressure Reducing Valve
1,The bellows pressure reducing valve is composed of valve body, valve cover, valve disc, valve body sealing ring, valve stem, bellows, regulating spring and other parts. The inlet of the body cavity is assembled with valve disc, valve body sealing ring and auxiliary spring. The auxiliary spring is used to maintain the automatic sealing of the valve disc and valve body sealing ring. The outlet body cavity is equipped with elastic sealing elements (bellows) to ensure the leakage of medium pressure behind the valve and compensate for pressure unevenness. The screw is used to adjust the working performance of the spring load pressure reducing valve.

2The inlet medium pressure in front of the valve enters the chamber through the gap between the valve disc and the valve body sealing ring, causing the medium pressure to flow through the combination box of the bellows. The bellows and spring are compressed by the pressure of the medium, and the valve disc closes the valve body sealing ring with the displacement of the valve stem, cutting off the medium in front of the valve and not supplementing the medium pressure behind the valve. When the pressure of the medium behind the valve decreases, the corrugated pipe is deformed due to the radial force of the regulating spring, causing the valve stem to push the valve disc open. Make the medium pass through the valve body sealing ring to supplement the pressure reduction after the valve.

Main technical parameters and performance indicators of bellows pressure reducing valve

Nominal pressure（MPa）	0.6	1.0	1.6
Shell test pressure（MPa）	0.9	1.5	2.4
Sealing test pressure（MPa）	0.6	1.0	1.6
Zui High Import Pressure（MPa）	0.6	1.0	1.6
Export pressure range（MPa）	0.05-0.4	0.1-0.8	0.1-1.0
Pressure characteristic deviation（MPa）△P2P	GB12244-1989
Flow characteristic deviation（MPa）△P2G	GB12244-1989
Zui small pressure difference（MPa）	0.1	0.15	0.15
Leakage rate	GB12245-1989

Shell test does not include bellows,During the pressure test of the shell,The bellows component must be removed before proceeding.

Flow coefficient of bellows pressure reducing valve（Cv）】

DN	15	20	25	32	40	50	65	80	100
Cv	1	2.5	4	6.5	9	16	25	36	64

Note: Please specify the model, pressure, and caliber when placing an orderFlow coefficientMaterial, opening pressure, medium, temperature

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