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Cowinns Industry Equipment Co.,Ltd
No.127 Room No.748 Changjiang Road,High-Tech District,
Suzhou City, Jiangsu Province, zip:215128 China
Tel:+86 512 6878 1993
Fax:+86 512 6818 4193
Mob&what's app:+86 153 0620 9257
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www.cowinns.com
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Handle 3000psi 1 1/4 inch ASTM A105 SAE ends 2 floating balls and 1 needle valve double block and bleed valve
- Valve type: Double block and bleed ball valve
- Port size: 1 1/4''
- Pressure:3000psi
- Material: ASTM A105
- End: SAE
- Operation: Handle
DBB ball valve specifications:
Design & manufacturer standard: ASME B16.34
Marking :MSS AP-25
Temperature:-29~150°C
Medium: water, oil & gas
Pressure test standard: API 598
Shell test (water):4500psi
Seat seal test(water):3300psi
Air test:0.6Mpa
Material list
Bonnet: ASTM A105
O-Ring: VITON
Ball:SS304
Seat: PPL
Body: ASTM A105+ galvanized
Stem:A276 410
Thrust collar: PTFE
Pin: SS
Needle:A276 304
Nut:A276 304
Valve structure:
Brief instruction of DBB ball valve:
The key to the working principle of the double block and bleed and relief function valve is the action of the two sealing slides installed on the cock.
DBB ball valve is a double block and bleed valve. Double block and bleed and relief function valves are suitable for aviation kerosene, natural gas ,light oil , pipeline gas, liquefied gas, chemical media and other pipelines, as an ideal device for cutting off medias.
The valve has an automatic relief device (optional). After the valve is completely shut off, the valve cavity is prevented from abnormally increasing pressure and the effect of the valve is checked. The valve switch indicator is synchronized with the switch position, which can accurately display the switch status of the valve.
Other materials are available base on clients' requests.
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