 |
| Quantity: | |
|---|---|
DBB NPT RF Forged Steel Floating Double Block And Bleed Valve
Structural Features
Dual Isolation Function: The valve is designed with two independent sealing balls inside, enabling dual isolation to ensure no medium leakage during maintenance or overhaul.
Bleed Function: Equipped with one bleed port, which can safely discharge residual media in the pipeline after isolation, preventing media accumulation and pressure buildup.
Floating Ball Design: The ball can float freely under the pressure of the medium, fitting tightly with the valve seat to form an excellent sealing effect. It also has an automatic pressure relief function.
Fire Safety Design: Complies with API 607 standards. Even in case of fire, the valve can maintain sealing performance to prevent safety accidents caused by medium leakage.
Anti-Static Device: Built-in anti-static device effectively prevents static accumulation, reducing the risk of fire and explosion.
Multiple Connection Methods: Offers two end connection types, NPT (threaded connection) and RF (flange connection), to meet different installation needs.
Technical Parameters
Size Range: 1/2" to 8" (DN15 to DN200)
Pressure Range: Class 150 to Class 1500 (PN16 to PN260)
Temperature Range: -46℃ to +550℃
Material Options:
Valve body: A105N, F304 (L), F316 (L), LF2, F11, F51, etc.
Ball: A105+ENP, F304 (L), F316 (L), F51, etc.
Valve seat: PTFE, NYLON, PEEK, PPL, etc.
Connection Methods: NPT (threaded connection), RF (flange connection), BW (butt-welded connection), SW (socket-welded connection)
Operation Modes: Various actuators available, including manual, electric, and pneumatic
Design Standards: API 6D, API 608, ASME B16.34
Testing Standard: API 598
Application Fields
Oil and Gas Industry: Used in exploration, gathering, processing, and transportation systems of oil and gas fields to realize isolation, control, and discharge of oil and gas.
Chemical Industry: Suitable for transportation and reaction systems of various chemical media, preventing medium leakage and ensuring production safety.
Pharmaceutical Industry: Applied in pipeline systems during pharmaceutical production to ensure medium isolation and cleanliness in the drug manufacturing process.
Food and Beverage Industry: Meets food-grade requirements, used in pipeline systems for food and beverage production to ensure hygiene and safety.
Urban Gas Industry: Used in pressure regulating stations, gas storage stations, and gas transmission pipelines of urban gas networks to ensure safe supply and stable transportation of gas.
