Technical Specification
Design Standard: API, ASME, EN, ISO, JIS, DIN, BS, GB
Size Range: NPS3/8’’-32’’ (DN10-DN800)
Pressure Rating: 150-2500LB, 1.0-25.0Mpa, JIS10-100K
End Connection: Flange
Drive: Lever, Gear, Electric, Pneumatic actuator, Bare Shaft

Features
Resilient seal/Metal to metal seal
Full bore/Reduce bore
Fire safe design, Anti-static device, Blow-out proof stem
Double block and bleed function
Grease injection for seat & stem
Cavity pressure self-relief
Optional lockable device
Anti-leakage design packing & packing box
ISO 5211 mounting pad
The surface form a protective film after Hare face treatment for trim. It not only improves anti-corrosion performance, but also can open close easily because of improved surface hardness.

Specifications
Metal seated
Floating or Trunnion mounted ball design
Side-entry
Split Body construction (2-PC or 3-PC)
Full bore & Reduce bore
Blow-out proof stem
Locking device
Anti-static device
Fire safe design/Non-fire safe design
ISO mounting pad
Self-cavity pressure relief

Picture Show


Design Features
1. Seal material design
Seal material is high purity flexible graphite which has merit of high temperature resistance, good strength, small friction coefficient, small open/close torque, reliable sealing performance, long ser vice etc.
2. To protect valves at high temperature
Under high temperature working condition, it is easy to cause thermal expansion for ball and seat which will lead to the valve cannot open. The metal seated ball valve adopts flexible graphite sealing structure which will absorb the thermal expansion come from components. This can guarantee the ball valve open and close flexibly under high temperature condition.
3. Self-clean seat design
Metal seated ball valve is usually applied to crystalline particle working condition. Some particle easily crystallizes and stick in the surface, causing the valve cannot open and close. -clean seat design as Detail B. With this So we improve the seat which design with self-design, the seat can automatically remove the crystalline particle from the surface to make sure the valve can open and close easily also maintain good sealing performance.

4. Dust proof seat design (For specific working condition)
When the valve is applied in powder working condition, the powder will easily go into seat inter space which will lead to seat spring lose elasticity and then the valve will cannot open and close. In view of such condition, we put sea-I dust in front and back of seat spring to make sure the valve can open and close easily also maintain good sealing performance.
5. Anti-static device design
It will form a static channel for close contact of body, seat, ball etc. metal parts. So there is no need to be fitted with antistatic device for metal seated ball valve.
6. V type lockable packing gland
To prevent the packing pressure point shift and uneven, resulting in leakage of packing seal. It should be locked no approval operate occasion.
7. Blow-out proof stem
Flip over type stem which is more safe and reliable can prevent the stem blow out effectively.
8. Belleville spring design
When the sealing surface is abrasive wear during operating, this type spring can ensure the sealing ring have enough preload to maintain good sealing performance.
9. Middle flange a- leakage structure design
The body and bonnet are fitted with metal+graphite spiral wound gasket which is put into the groove of body. The gasket keep lasting flexible and the sealing performance is reliable.
10. Fire safe design
The sealing surface is metal to metal structure; Packing of stem and seat is flexible graphite material; Gasket is flexible graphite material. Thus, with this design, the valve has reliable sealing performance even in fire.
11. Special processing on trim parts
11.1 The ball and seat rough casting should be solution or annealing treatment to stress relief which ensure the material recrystallization and mechanical properties. And also can reduce the deformation caused by uneven machining stress.
11.2 We adopt advanced hard treatment technology for ball and seat: Metal seated ball valve’s ball and seat totally adopt metal to metal sealing. Depending on working condition, we adopt advanced HOVF1 Plasma surfacing etc. treatment to process ball and seat.

11.3 Ball surface coating instruction