Ball Valve - Type 954/LB/LN/P/PLUS/A/A FB/A FN/LD | IVR

IVR Type 954 Full-Bore Ball Valve

The IVR 954 is a full-bore brass ball valve for on/off isolation in hydraulic, HVAC and auxiliary industrial services. The valve has female/female threaded ends to ISO 228-1 and is typically selected where low pressure drop and straightforward manual isolation are required.

Construction and Standards

• Body material: CW617N brass
• End connections: ISO 228-1 female threaded ports
• Design reference: DIN execution
• Seat material: PTFE
• Pressure classes: PN 16, PN 32, PN 40 and PN 50, depending on size and variant
• Flow pattern: full bore for reduced head loss compared with reduced-port valves

Variants

• 954LB: blue lever handle
• 954LN: black lever handle
• 954/P: red lever with insulation extension for insulated pipework
• 954 PLUS: standard full-bore execution
• 954/A, A FB, A FN: butterfly handle versions for restricted installation space
• Lockable lever version: for fixed-position service or controlled access

Typical Applications

• Hot and chilled water distribution circuits
• HVAC plant rooms and terminal unit isolation
• Technical water and non-aggressive utility lines
• Compressed air lines, subject to material and pressure compatibility
• Maintenance isolation around pumps, filters, heat exchangers and manifolds

Suitable Media and Operating Conditions

The valve may be used with water, heating and cooling fluids, technical water and compressed air where CW617N brass and PTFE seats are compatible with the medium. Final selection should confirm pressure, temperature, glycol concentration, additives and any dezincification or corrosion risk against the manufacturer’s data.

Selection Guidance

• Select the PN rating according to maximum allowable pressure, temperature and system test pressure.
• Use the insulation-extension version on insulated pipework to keep the handle accessible and reduce interference with insulation thickness.
• Use butterfly handle versions where lever rotation clearance is limited.
• Use the lockable lever where valve position control is required for maintenance, commissioning or safety procedures.

Actuation and Operation

The IVR 954 range is intended for quarter-turn manual operation using lever, butterfly or lockable handle arrangements. Automated actuation is not inherent to the listed versions and should only be applied if a compatible valve stem interface and torque margin are confirmed.

Sealing and Maintenance Considerations

PTFE seats provide shut-off for compatible clean fluids. Ball valves should normally be operated fully open or fully closed; throttling service can increase seat wear and may affect leakage performance. Periodic operation is recommended in stagnant services to reduce the risk of sticking.

FAQ

Is the valve full bore?
Yes. The IVR 954 is described as a full-bore ball valve, reducing pressure loss compared with reduced-bore isolation valves.

Can it be used on steam?
Steam service is not confirmed by the provided data. Check the manufacturer’s pressure-temperature chart, seat limits and approvals before specifying for steam.

Which connection standard applies?
The threaded female/female ends are to ISO 228-1.