Product Model: Q361F

Pressure Rating: 150–300LB, 1.6 MPa–4.0 MPa 

Size: 2"–36" / DN50–900 mm

Material: WCB, A105, F11, F22, F304, F316, CF8, CF8M, WCC

Applicable Temperature: -29°C (-20°F) to +200°C (392°F)

Connection Type: Welded, Butt Weld

Applicable Media: Water, petroleum, natural gas, acid and alkaline media, etc

Operation: Electric, Manual, Worm gear drive, Gear drive

Materials of Vent-type Fully Welded Ball Valve

1. Body: Carbon steel ST37.0, A106-B; Steel 20

2. Ball: Stainless steel 304 or 316

3. Stem: 2Cr13

4. Stem Seal: Fluorocarbon rubber (FKM/Viton)

5. Ball Seal: RTFE (PTFE + Carbon)

Standard Features of Vent-type Fully Welded Ball Valve

1. Nominal Diameter: DN15–1000

2. Pressure: PN16–40

3. Working Temperature: -29°C to +200°C

4. Applicable Media for gas transmission pipeline welded ball valves: Petroleum/gasoline, LNG/LPG, petrochemical, steel plants, heating pipelines, etc.

5. Operation: Lever, Gear (vertical/horizontal), Electric, Worm gear.

Applications of Vent-type Fully Welded Ball Valve

1. City gas: Gas output pipelines, mainlines, and branch supply pipelines, etc.

2. Central heating: Output pipelines of large heating equipment, mainlines, and branch lines.

3. Heat exchangers: Opening and closing of pipelines and various loops.

4. Steel plants: Various fluid pipelines, exhaust gas discharge pipelines, gas and heating supply pipelines, fuel supply pipelines.

5. Various industrial equipment, various heat treatment pipelines, industrial gas and heating pipelines.

Performance of Fully Welded Ball Valve

1. Maintenance-free, no adjustment or lubrication required, easy to install, and long-term reliable operation at low operating costs. The surface adopts plastic spraying technology, providing a beautiful gloss. No external leakage. The welded body structure makes the valve lightweight and easy to insulate. The adjustment mechanism is very simple to install, and the operating handle can be removed and installed in a different direction.

2. Since the seat is constructed of a carbon-reinforced PTFE sealing ring and a disc spring, it has strong adaptability to pressure and temperature changes and will not produce any leakage within the rated pressure and temperature ranges.

3. The ball's machining process is tracked by an advanced computerized measuring instrument, resulting in high machining precision.

4. Since the valve body material is identical to the pipeline material, there will be no uneven stress, and it will not deform due to earthquakes or vehicles passing overhead. The pipeline is aging-resistant.

5. Integral fully welded, full bore and reduced bore, adopting fixed ball and floating ball, double piston effect sealing system, and automatically injected sealant type bearing.

6. To prevent static electricity, steel balls and springs are installed between the stem and ball, and between the stem and stuffing box respectively, keeping all valve parts conductive with the valve body to let current pass through and release static electricity. This not only prevents fire but also prevents corrosion and enables temporary shut-off for timely maintenance.

7. The anti-blow-out stem function is because the stem is always subjected to a detachment force due to internal pressure, so the stem is designed with an anti-blow-out structure.

8. Low-friction material thrust washers support and direct the pressure towards the stem, so that the stem only serves the function of transmitting torque.