Pneumatic stop valve
I. Introduction:
The J641H pneumatic globe valve is suitable for pipelines in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, and power industries where the nominal pressure PN ranges from 1.6 to 16.0 MPa and the working temperature ranges from -29℃ to 550℃, to cut off or connect the medium. Applicable media include water, oil products, steam, acidic media, etc. Operation methods include manual, gear transmission, electric, pneumatic, etc. Cylinder operating media: compressed air, nitrogen. It has a simple structure, convenient manufacturing and maintenance; small working stroke, short opening and closing time; the sealing surface between the closing body (disc) and the valve seat adopts conical surface sealing, requiring small closing force, being resistant to scouring, and ensuring reliable sealing. This valve adopts a double-acting cylinder, which uses air intake from the upper or lower chamber to remotely control the valve, making operation convenient and flexible. Cylinder operating media: compressed air, nitrogen. It has a simple structure, convenient manufacturing and maintenance; small working stroke, short opening and closing time; the sealing surface between the closing body (disc) and the valve seat adopts conical surface sealing, requiring small closing force, being resistant to scouring, and ensuring reliable sealing. The valve seat is replaceable, allowing arbitrary pairing with the sealing surface material of the closing part to meet working condition requirements and extend service life.
II. Product Features:
1. The product is manufactured in accordance with national standard GB12235, featuring a reasonable structure, reliable sealing, excellent performance, and an elegant appearance.
2. The sealing surfaces of the disc and valve seat are surfaced with Stellite cobalt-based hard alloy, providing wear resistance.
3. The valve stem undergoes quenching and tempering and surface nitriding treatment, exhibiting good corrosion resistance and scratch resistance.
4. It can adopt various piping flange standards and flange sealing surface types to meet various engineering and user requirements.
III. Product Manufacturing Standards:
Design and manufacturing: GB12235
Structural length: GB12221
Pressure-temperature class: GB9131, JB/T74, HG20604
IV. Product Application:
This valve adopts a double-acting cylinder, which uses air intake from the upper or lower chamber to remotely control the valve, making operation convenient and flexible. Cylinder operating media: compressed air, nitrogen. It has a simple structure, convenient manufacturing and maintenance; small working stroke, short opening and closing time; the sealing surface between the closing body (disc) and the valve seat adopts conical surface sealing, requiring small closing force, being resistant to scouring, and ensuring reliable sealing. The valve seat is replaceable, allowing arbitrary pairing with the sealing surface material of the closing part to meet working condition requirements and extend service life.
V. Parts Materials:
Valve Body | WCB | ZG1Cr18Ni12Mo2Ti | ZGCr5Mo | ZG1Cr18Ni9Ti |
Valve Cover | WCB | ZG1Cr18Ni12Mo2Ti | ZGCr5Mo | ZG1Cr18Ni9Ti |
Support | WCB | ZG1Cr18Ni12Mo2Ti | ZGCr5Mo | ZG1Cr18Ni9Ti |
Disc | 2Cr13 | 316 | Cr5Mo | 304 |
Valve Stem | 2Cr13 | 316 | 25Cr2MoV | 304 |
Valve Seat | 25 | 316 | 304 | 304 |
Seal Ring | 304, reinforced flexible graphite | |||
Packing | Reinforced flexible graphite | |||
Valve Stem Nut | ZCuA110Fe3 | |||
| Machinery & Equipment/Valves/Globe Valves | |
