The DBB Valve With Injection Quill adopts dual seating structure with a middle bleed port. Two ball seats create double block isolation after closure. The intermediate bleed outlet serves for fluid sampling and seal leakage inspection. It is widely used in sampling scenarios of petroleum, chemical and electric power, safely extracting medium samples from pipelines for subsequent composition analysis while ensuring zero leakage of the system.
Recently, we sedelon produced a DBB Valve with Injection Quill!
Below are specifications of this valves for reference:
Siza: 2”
Pressure: 2500LB
Connection ends: 2"RTJ x 1/2"NPTF
Body Material: LF2
Injection Quill Length：315mm
Injection Quill Size & Material：3/4" - Sch. XXS - ASTM A333-6
Design and Manufacture Standard: ASME B16.34
Test Standard: API 598
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