Ball Valve 2 Pieces - UNIFLOW Fig. BV2MD | Comeval

Comeval UNIFLOW Fig. BV2MD Ball Valve

The Comeval UNIFLOW Fig. BV2MD is a 2-piece split-body floating ball valve in ASTM A351 CF8M stainless steel. It is used for on/off isolation in process lines where threaded end connections and compact valve installation are required.

Construction and Ratings

• Body material: ASTM A351 CF8M stainless steel
• Design: 2-piece, split body, floating ball
• Seat material: PTFE as standard
• End connections: BSP, NPT or ISO 228-1 threaded ends
• Pressure class: PN 63, subject to temperature and seat limitations
• Size range: DN8 to DN100
• Flow direction: bidirectional shut-off service
• Standard reference: DIN-based pressure designation

Suitable Media and Services

The BV2MD is typically selected for water, HVAC circuits, lubrication systems, industrial gases, compressed air and general process utility lines. Media compatibility shall be checked against CF8M stainless steel, PTFE seats and the selected stem sealing arrangement.

Operating Conditions

Pressure capability depends on valve size, temperature, seat material and threaded connection limits. PTFE seats are suitable for many neutral fluids and gases but require verification for temperature, chemical exposure, differential pressure and cycling frequency.

Automation and Actuator Mounting

The BV2MD version uses a direct mounting arrangement for manual operation, gearbox installation or pneumatic/electric actuation. Direct mounting reduces intermediate brackets and couplings, but actuator sizing must still consider:

• breakaway torque after standstill
• maximum differential pressure
• media condition and deposits
• cycle frequency and required operating time
• available air pressure or electrical supply

Sealing and Maintenance Considerations

Standard PTFE seats provide tight shut-off for clean services. For abrasive media, crystallising fluids or high-temperature operation, seat suitability and leakage class requirements should be reviewed before selection. Periodic inspection should include stem leakage, handle or actuator alignment and thread integrity.

BV2MD Compared with Non-Direct-Mount Variants

• BV2MD: prepared for compact actuator installation with fewer interface parts.
• Standard manual variant: suitable where remote operation or automated shutdown is not required.
• Actuated assembly: selected where PLC, DCS, ESD or local control integration is required.

Typical Industrial Use Cases

• utility isolation in process plants
• compressed air headers and branch lines
• HVAC water circuits and equipment isolation
• lubrication and auxiliary service skids
• gas or liquid lines requiring compact threaded isolation valves

Certifications and Documentation

Declarations of conformity are available for 2-piece and 3-piece ball valves, including ATEX and EAC 010/032 documentation where applicable to the supplied configuration.

FAQ

Is the valve suitable for throttling? It is primarily an isolation valve. Continuous throttling can damage seats and reduce shut-off capability.

Can it be installed in either flow direction? Yes, the floating ball construction is suitable for bidirectional shut-off.

Can it be automated later? Yes, provided actuator torque, mounting interface and service conditions are verified.