Metal Seated Ball Valve


Metal Seated Ball Valve is manufactured for high temperature up to 540℃ (may be higher based on the material of body and trim) or abrasion resistance.

What is a Metal Seated Ball Valve?

ZECO metal seated ball valve is suitable for high temperature and high pressure special medium or medium with particles in the pipeline. Metal seated ball valve type selection based on different working conditions of the analysis and calculation, choose suitable working condition of hardness of the material hardness, to adopt advanced technology of spray welding on the surface of a sphere and valve seat sealing surface for special processing, grinding with hard sphere, and seat sealing surface makes the fit precision no leakage.

Types of Metal Seated Ball Valves

  • Metal Seated Trunnion Mounted Ball Valves are split-body, trunnion-mounted ball valve with spring-loaded seats with cavity relief, they are double block-and-bleed capability.
  • Metal seated Floating ball valve is with Zero leakage for high­temperature operating conditions. Furthermore, seats with hard surface materials in Chromium Carbide, Tungsten Carbide or Stellite are also available. All Relia floating ball valve are Antistatic Design and Automatic Body Cavity Relief.

Applications of Metal Seated Ball Valves

  • Oil & Gas
  • Refining / Petrochemical
  • Chemical Process
  • Power Generation
  • Pulp & Paper
  • Mining

Features of Metal Seat Ball Valve:

  • Absolute Fire Safe Guarantee. ZECO metal seated ball valves are absolute fire safe design. Metal-to-metal contact is designed between ball and seat, where is unconditional fire safe function. Flexible graphite gasket can prevent fluid leakage from between body & seat or body & adapter even if high temperature environments to reach fire-safe purpose. In addition, other sealing components such as stem packing can also reach fire-safe function and prevent external leakage. So all parts of the valve will not be affected by high temperature service.
  • Low Pressure Reliable Sealing. ZECO metal seated ball valves adopt seat spring structure, which can push upstream seat tightly against the ball surface creating a reliable sealing even if extremely low pressure.
  • ZECO metal seated ball valve switch torque light. Because the bottom of the sealing ring spring seal ring with the ball closely together, as long as the switch torque exceeds the pre-load of the spring when the switch will be very light, and in the configuration of electric actuator, can choose than other brands of metal seated ball valve a small number of electric actuator;
  • ZECO metal seated ball valves for high temperature has a long service life. General soft seated ball valves working temperature is limited up to 400°F , but metal-seated ball valves are guaranteed for a maximum service temperature of 800 °F.
  • Blow-out Proof Stem & Anti-Static Device. As general ball valves, ZECO metal seated ball valves are provided with blow-out proof stem& anti- static device.

Product Range of Metal Seated Ball Valves:

 Type  Metal Seated Floating Ball Valve/Metal Seated Trunnion Ball Valve
 Body Material  Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Duplex Steel
 Ball/Seat Surface  Stellite, Tunsten Carbide, Chrome Carbide
 Size Range  1/2”-48” (DN15-DN600)
 Class Rating  ANSI Class 150-2500 (PN20-PN420)
 End Connection  Butt Welding, Flanged, Hub
 Operator  Lever, Worm Gear, Electric, Penumatic, Hydraulic

Applicable Standards of Metal Seated Ball Valves

Design standard: ISO17292/ API 6D
Testing standard: BS6755/ API598
Pressure-Temperature rating: ASME B-16.34
Flange Dimensions: ASME B-16.5
Face to Face: ASME B-16.10

Material of Metal Seat Ball Valve:

No Part Material
1 Body ASTM A105
2 Bonnet ASTM A105
3 Ball ASTM A105 + Tungsten Carbide
4 Seat ASTM A105 + STL
5 Stem ASTM A182 F6a
6 Anti-static Device SS304
7 Gasket Graphite + SS304
8 Bolt ASTM A193 B7
9 Nut ASTM A194 2H
10 O-ring Viton A
11 Lever ASTM A216 WCB

If you are looking for reliable metal seated ball valve manufacturers, ZECO company can be your best choice.