Pneumatic-hydraulic Actuated Fully Welded Ball Valve

JOEPAI durable Pneumatic-hydraulic Actuated Fully Welded Ball Valve is widely used in natural gas transmission lines, buried district heating systems;High-pressure regulation in refineries , power plants, etc. Pneumatic-hydraulic hybrid actuators combine pneumatic speed with hydraulic torque, optimized for large-bore (DN≥200) high-pressure precision control.In addition, JOEPAI provides standard specifications and customized services, supports OEM and ODM cooperation, and helps customers ensure the long-term reliable operation of their projects.

Parameter:

Size: 2" - 56"
Pressure rating: Class 150 to Class 2500 (PN2.5 to PN 420)
Main material : WCB, WCC, LCB, CF8, CF8M, CF3, CF3M, CN7M, CF8C, 4A, A105, LF2, F304, F316, F304L, F316L, F321, F51, etc.
Standards applied: API. ASME, ANSI, NACE, CE/ EN, DIN, JIS, BS, ISO, TS, GB, etc.
Operative temperature: -196 °C to 980 °C ( -320.8 °F to 1796 °F)
Optional operation: Manual, Gear, Electric, Pneumatic, Hydraulic

Features:

High precision ball and High tightness seat
Long life ball and seat
The most economical material combination
The best fire safe and static resistance safety
Widely applicable
Various driving types

Dual Sealing Mechanism: 

Features PTFE+C sealing rings combined with disc springs, adapting to pressure fluctuations (up to PN42 MPa) and temperature extremes (-29°C–200°C; select models up to 350°C).

Stress-Resistant Design: 

Welded valve-pipeline integration resists vibration/deformation, suitable for seismic zones or buried installations.

Fire-Safe & Anti-Static: 

Metal seals and graphite packing options meet explosion-proof requirements for oil/gas and petrochemical applications.

Smart Actuation & Control:

Actuators support double-acting/single-acting modes; pneumatic versions require 0.4–0.7MPa air supply, while hydraulic types integrate high-pressure oil systems.Optional accessories (solenoid valves, positioners, limit switches) enable remote control, signal feedback (4–20mA), or fail-safe modes (e.g., air-failure close).

Adaptability & Maintenance:

Broad size range (DN15–DN2000); supports welded, flanged, or other connections.Direct burial eliminates valve chambers, reducing costs; maintenance via shallow ground pits.