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. Relia Metal Seated Ball Valves are Zero leakage (bubble tight seal). Metal Seated Ball Valve is also called metal to metal ball valve, as the seat and ball are made from metal.
Zero leak metal seated ball valve
Metal Seated Ball Valve
Cameron JKLYZX0750 Gate Valve
For metal seated ball valve, the seat ring and ball are precisely machined, coated by high velocity oxygen fuel(HVOF) coating process and lapped to match ball, creating a positive seal for bubble-tight performance. Relia Metal seated trunnion ball valves have many advantages such as excellent corrosion & wear resistance, tight shut-off, smooth control, low torque, wide temperature & pressure range, as well as stability under pressure. Metal seated ball valve provide long service life with outstanding fugitive emissions performance and low operating torques in even the toughest applications.
Zero leak metal seated ball valve
The sealing between the seat and body is O-ring. It is designed for temperature below 150˚C and zero leakage warrenty. This design is for gas comprssion project ect.
Leakage Rate
Zero leakage available (MUCH higher level than ANSI/FCI 70-2 Class V shut-off, Class VI).
Types:
Metal seated trunnion ball valves and metal seated floating 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.
Metal seated floating ball valve series includes a specific model for highly abrasive catalyst services or with the presence of solids, called SAT3.
Top Entry metal seated ball valves are available upon request.
Applications:
- Oil & Gas
- Refining / Petrochemical
- Chemical Process
- Power Generation
- Pulp & Paper
- Mining
Features & Benefits
a) Unique, the metal seated ball valve with patented single-seat ball valve design. It has a flat spring set acting through a hard-faced bearing against the bottom ball shaft which provides sufficient initial ball-seat load for valve tightness, even at low delta P.
b) Metal seated ball valve proven in qualification tests and field operation to be solids–proof, even for the toughest applications on slurry service with solids particles.
c) Tightness rates: Allowable leakage rate at full Delta P: ASME/ FCI 70-2 Class VI/V. Tighter shutoff available upon request.
The leakage rate also can be customization from end-user request
d) The metal seated ball valve with standard extension bonnet/stem, whose design base on the different temperature range.
e) Uni-directional or bi-directional sealing
Product Range
| 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”-24” (DN15-DN600) |
| Class Rating | ANSI Class 150-2500 (PN20-PN420) |
| End Connection | Butt Welding, Flanged, Hub |
| Operator | Lever, Worm Gear, Electric, Penumatic, Hydraulic |
Metal Seated Ball Valve VS Soft Seated
Metal seated ball valves are introduced when soft seated ball valves are not suitable with the fluid.
Applications:
Soft seated ball valves are suitable for the working temperature lower than 260℃(when PEEK seat is introduced), while metal seated ball valves are suitable for temperature up to 540℃ (may be higher based on the material of body and trim).
Another reason to choose metal seated ball valves are due to its feature of abrasion resistant, while soft seated is not.
Seat Material Options and applications:
Soft Seat:
PTFE-Made from Virgin Teflon, this is the most common sealing material; its chemical compatibility is excellent for almost all media. Temperature -50°F to 400°F.
PTFE-15% glass reinforced PTFE, suitable for temperature -50°F to 450°F, chemical resistance is compatible to virgin PTFE with better wear factor. The standard in most all of our ball valves.
Carbon Filled PTFE-25% Carbon Graphite with 75% PTFE, this material offers a wide temperature range with better wear resistance than standard RPTFE. Good for steam service -50°F to 450°F.
Delrin-This material is very rigid, suitable for high pressure up to 5000psi dependant on valve size and temperature range of -50°F to 180°F.
PEEK-Best suited for high temperature and pressure service, suitable for tobacco and nuclear service. Temperature -70°F to 550°F.
Nylon-Special Nylon seats are offered for higher pressure and lower temperature service. They can be used in high-pressure air, oil and other gas media but are not suited for strong oxidizing agents. Temperature rating -30°F to 200°F
