Metal Seated Ball Valve
Key Specifications / Features
Model No.: Hits: 7
Detail Information
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. JONLOO 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.
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. JONLOO 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.
Metal seated ball valve for high temperature
The split seat design (Part No. 5) for high temperature metal seated ball valve provides freedom for thermal expansion of the ball without jamming, even at extremely high temperatures.
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.
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
Remarks:
TCC-Tungsten Carbide Coating
Cr3C2-Chromium Carbide
Metal to Metal Seat Ball Valve
Surface Coatings for Metal Seated Ball Valve
Unlike surface treatment methods whereby the existing surface is changed by diffusion, in surface coating an outer layer of new material is generated on the surface. The following types of surface coating methods are available in the Habonim metal seated range; chromium carbide with nickel chrome binder (Cr3C2), tungsten carbide with cobalt binder (WC-Co), and stellite welding.
Valve Ball Hard Coating done by HVOF Valve Ball Hardness is Over 600 HRC
Stellite
Applications:
- Liquid + Gaseous media with partially entrained particles / solids (moderate operating cycle)
- Excellent wear resistance / good corrosion resistance
- Wide temperature range
A cobalt-based stellite coating on valve ball and seat provides excellent mechanical wear resistance, with good corrosion resistance at temperatures up to 538˚C (1000˚F). The Stellite is applied by a Plasma Thermal Arc (PTA) method. Most stellite alloys are cobalt based with elements of Chromium (Cr), Carbon(C), Tungsten (W) and Nickel (Ni). Stellite is broadly used in the pulp and paper industry, as well as in refining applications, such as catalyst handling and hydrocracker processes.
WC-Co (Tungsten Carbide)
Applications:
- Liquid + Gaseous media with partially entrained particles / solids (high operating cycles)
- Excellent abrasion resistance / good corrosion resistance
Tungsten Carbide with a cobalt binder coating applied by HVOF techniques similar to Cr3C2.WC-Co coating applied mainly to 400 series martensitic stainless steel results with micro-hardness as high as 72HRC. This coating resists cryogenic temperature down to -196˚C (-320˚F) and high temperatures up to 538˚C (1000˚F). WC-Co is a wear resistance anddense coating with chemical resistance to sulphur environment on Nickel based alloy.
Cr3C2 (Chromium Carbide)
Chromium Carbide with nickel chrome binder applied by a High Velocity Oxygen Fuel (HVOF) gun creates a 0.3mm hard outer layer. Cr3C2 coating applied to high strength steels, results in a micro-hardness of up to 68HRC. This coating resists cryogenic temperatures down to -196˚C (-320˚F) and high temperatures up to 815˚C The valve maximum temperature is 650°C. All the temperatures above 650°C refer to the coating or bolts performance only (1500˚F). This multipurpose wear resistance coating is used extensively in the power generation, refining and hot catalyst handling services. Its limitations are in wet sulphur or chloride environments where sulphuric acid can form and attack the coating.
Applications:
Stellite Seat Surface-Recommended for service with severe flashing or hydraulic shock, abrasive media or where possible trapped metal may exist. Relia valve metal seats are hand lapped to the ball as individually matched sets, assuring line contact between valve ball and seats, resulting in smooth operation and tight shut off class. JONLOO offers metal seat ball valve in different classes of Shut Off including Class IV, V and VI.
Cr3C2, suitable up to 815°C, Good corrosion resistance.
WC-Co, Tungsten, Carbon Cobalt, Excellent corrosion resistance.
