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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

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


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



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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