Seat of metal to metal ball valves have special protection and tight shut-off design to be applied to some poor conditions, such as high- temperate, high pressure and abrasive mediums, to fully solve the problem of inner leakage and outer leakage, and ensure reliable sealing with zero leakage.

Advanced rocket-spraying process ensures that sealing is realiable under all temperatures — pressures. With hydrogen used as fuel, this process has been applied to the sealing faces of the ball and the valve seats;

Double block and bleed;

Cavity pressure self relief;

Blowout-proof stem;

Seats are Tungsten Carbide HVOF(High Velocity Oxy Fuel) or overlay cladding coated with metal to metal contact between seats and ball, with metal to metal seat sealing characteristics, and it can clean dirt at surface of the gates.

Hardness of coating surface: up to HRC68～ 72;

Bonding strength of coating: ≥10000Psi;

Thickness of coating: 0.3 – 0.5 mm;

The precise “one-to-one” grinding process ensures the precise “one-to-one” grinding between the ball and the valve seat;

Body material: carbon steel, stainless steel, alloy steel, dual-phase steel

Nominal diameter:2″～32″

Pressure range:Class150～2500

End connection: RF, RTJ, BW

Working temperature:-29℃～+560℃

Operation : wrench, worm gear, electric, pneumatic actuator, gas over oil actuator, electro-hydraulic actuator , etc.

Principle of the cast steel floating ball valve: This kind of ball valve has a floating ball supported by two valve seats. Under the medium pressure effect, a certain displacement can be generated by the ball itself so as to be pressed onto the seat seal ring at the outlet, guaranteeing tightness at the outlet.

The floating ball valve is mainly divided into such two structures as the single-body type and double-body type float ball valve structures

The ball valve are designed in accordance with ISO17292、API 608、BS 5351、GB/T 12237;

Simple structure with good tightness and small torque;

Have reduce bore type and full bore type with the minimum flow resistance (zero actually);

Low emission packing;

Fire safe, anti-static and anti-blowout stem design;

Optional locking device

Optional ISO 5211 top flange

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter:1/2″～6″（DN15~DN150）

End Connection: RF, BW, THR

Pressure range: Class150 – 300（PN16~PN40）

Working temperature: -46℃ – +200℃

Operation : wrench, worm gear, electric, etc

Principle of the forged steel floating ball valve: This kind of ball valve has a floating ball supported by two valve seats. Under the medium pressure effect, a certain displacement can be generated by the ball itself so as to be pressed onto the seat seal ring at the outlet, guaranteeing tightness at the outlet.

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter:1/2″～6″（DN15~DN150）

End Connection: RF, RTJ, BW, THR, SW

Pressure range: Class150 – 2500（PN16~PN420）

Working temperature: -46℃- +200℃

Operation : wrench, worm gear, electric, etc

The side entry trunnion mounted ball valve has been designed two piece body type or three piece body type and with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats can attach the ball’s surface tightly, other more, pressure of medium also can push seats to attach ball tightly to ensure sealing more reliable.

The trunnion ball valve is equipped with a movable seat seal ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve.

The ball valve are designed in accordance with ISO14313、API 6D、BS 5351、GB/T 19672;

Simple structure with good sealing performance and small torque;

Full bore and reduced bore design with the minimum flow resistance (zero actually);

Emergency sealant injection;

Cavity pressure self relief;

Independent ball and stem;

Low emission packing;

Fire safe, anti-static and anti-blowout stem design;

Valve seat function DBB, DIB-1, DIB-2;

Optional extended bonnet.

Body material: carbon steel, stainless steel, alloy steel
Nominal diameter:2″～60″（DN50~DN1500）

End Connection: RF, RTJ, BW

Pressure range: Class150～2500（PN16~PN420）

Working temperature:-46℃～+200℃

Operation: Wrench, worm gear, electric, pneumatic, gas over oil actuator and electro-hydraulic actuator

The top-entry ball valve is designed as an integrated valve body. Its support and ball rod fixed by an upper-assembled pivot and an integrated pivot respectively and the integrated high-strength ball rod ensure an accurate ball positioning. The unique technology of retractable valve seat is adopted, realizing online replacement of valve stem, valve stem seal rings, metal valve seats and preloaded springs.

The ball valve are designed in accordance with ISO14313、API 6D、BS 5351、GB/T 19672;

Simple structure with good tightness and small torque;

One piece type body;

Have reduce bore and full bore with the minimum flow resistance (zero actually);

Emergency sealant injection;

Cavity pressure self relief;

Low emission packing;

Fire safe, anti-static and anti-blowout stem design;
Valve seat function DBB, DIB-1, DIB-2;

Optional extended bonnet.

Body material: carbon steel, stainless steel, alloy steel
Nominal diameter:：2″～60″（DN50~DN1500）

End Connection: RF,RTJ,BW

Pressure range：Class150～2500（PN10~PN420）
Working temperature：-46℃～+200℃
Operation :  wrench, worm gear, electric, etc.

Cryogenic ball valve is suitable for service of working temperature down to －196℃, such as LNG, LPG, and air separation industry. The cryogenic trunnion ball valves are produced by the most advanced technology. It is designed with LIP SEAL which can keep valves with excellent sealing performance in ultra-low temperature. Wuzhou cryogenic test laboratory can test valves up to NPS32.

Design standard as per: BS6364、GB/T 24925

Bonnet extended

Low fugitive emission control

Lip seal

Cavity pressure self relief
adopt import seat material of stable low temperature performance
The seat and pressure relief structure can be adapt varies working condition
Top entry structure is convenience to on-line maintenance

Body material: Stainless Steel, Cryogenic Alloy Steel, Dual-Stainless steel

Floating and trunnion mounted ball valve(Side and Top Entry)

Nominal diameter:1/2″～32″

Pressure range:Class150～1500

End connection: RF, RTJ, BW

Working temperature:-196℃～+200℃

Operation : wrench, worm gear, electric, pneumatic actuator, gas over oil actuator, electro-hydraulic actuator , etc.