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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 1 1/4 inch 3000psi ASTM A105 SAE end 2 floating balls and 1 needle valve DBB (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: ASMEB16.34
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
Brief instruction of DBB ball valve:
DBB ball valve is a double block and bleed valve. Double block and bleed andrelief function valves are suitable foraviation kerosene, light oil, natural gas, liquefied gas, pipeline gas,chemical media and other pipelines, as an ideal device for cutting off media.
The key to the working principle of thedouble block andbleed and relief function valve is theaction of the two sealing slides installed on the cock.
The valve has an automatic relief device (optional). Afterthe valve is completely shut off, the valve cavity is prevented from abnormally increasingpressure and the effect of the valve is checked. The valve switch indicator issynchronized with the switch position, which can accurately display the switchstatus of the valve.
Other materials are available base on clients' requests.
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