Zhejiang Shunlin Valve Co., Ltd. is China Flange Valve Manufacturers, we are design and manufactures API standard valves (globe valves, gate valves, check valves, ball valves).
Can cast steel globe valves pass nitrogen?
Cast steel globe valves can pass nitrogen. According to the relevant inquiry information, the cast steel stop valve can pass through nitrogen and store in the special high-pressure gas. When in use, the gas pressure is reduced to the range required by the test through the ammonia stop valve.
What does the stop valve model mean?
There are different, such as rising stem flange cast steel stop valve. J=stop valve 4=flange 1=rising stem H=cast steel. Each symbol represents a device.
According to the domestic valve model standard, the model of the stop valve is represented by the valve type, driving mode, connection mode, structural form, sealing material, and valve body material code.
1. The type code of the stop valve is J;
2. The driving mode code of the stop valve is represented by letters. The common ones are 2-electrohydraulic, 9-electric, 6-pneumatic, 5-bevel gear drive, 3-worm; Manual writing is not required;
3. The connection type code of the stop valve is represented by letters, 1-internal thread, 2-external thread, 4-flange type, 6-welding, 7-wafer type, 9-clamp, 0-ferrule;
4. Stop valve structure type code, 1-DC flow channel (non-balanced disc), 2-Z-shaped flow channel (non-balanced disc), 3-three-way flow channel (non-balanced disc), 4-angle flow channel (non-balanced disc), 5-DC flow channel (non-balanced disc), 6-DC flow channel (balanced disc), 7-angle flow channel (balanced disc);
5. The sealing material or lining material shall be R-austenitic stainless steel, T-copper alloy, X-rubber, S-plastic, N-nylon plastic, F-fluoroplastic, H-Cr stainless steel, Y-cemented carbide, J-rubber lining, M-Monel alloy, Tc-ceramic;
6. Valve body material code: Z-gray cast iron, K-malleable cast iron, Q-nodular cast iron, T-copper, and alloy, C-carbon steel, P-chrome-nickel series stainless steel, R-chrome-nickel-molybdenum series stainless steel, V-chrome-molybdenum-vanadium steel.
Zhejiang Shunlin Valve Co., Ltd. is a China flange valves manufacturer and OEM flange valve supplier, we provide custom flange valve sales, welcome to consult.