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Butterfly Double Offset Valves

HP series


CVB HP Series valves are specified worldwide thanks to their unique combination of shut-off, control and reliability features, their compactness and fitness for purpose in critical tight shut-off isolation and control duties and combined isolation / non-return applications.

Core Features

  • Double eccentric design
  • Zero leakage, bi-directional tight shut-off
  • One single piece seating installed on the valve body (available on the disc as alternative)
  • Interchangeable and adjustable seal ring
  • Disc or body mounted rubber seal or metal ring
  • Self-cleaning seat
  • Shaft protected from aggressive media
  • Welded, bolted or integral seat
  • Self-lubricating bearings
  • Corrosion resistant shaft bushing

Benefits of HP Series

One piece cast or fabricated body to:

  • Guarantee ultimate rigidity
  • Achieve leak free performances
  • Guarantee a continuous flange sealing surface
  • Resist to corrosion and erosion

Conical centred seat to:

  • Resist to corrosion
  • Reduce wear from pipeline media

Heavy special section seal ring to:

  • Allow for full tight shut off at pressure up to 40 bar
  • Adjust compression to allow for sealing at different pressure value

Hydro-dynamically efficient disc to:

  • Improve flow capability
  • Reduce pressure drop
  • Reduce dynamic torque

Special bushings to:

  • Prevent contamination to enter
  • Work with solid particles
  • Guarantee a longer service life

Product Specifications

Production Range

Nominal diameter
2” – 120” (50 - 3000 mm)
larger size upon request

Pressure Limit

From full vacuum up to +25 bar (355 psi) for soft seat
From full vacuum up to +40 bar (580 psi) for metal seat

Temperature Limits

From -20°C (-4°F) up to +150°C (+302°F) for soft seat
From -196°C (-320°F) up to +818°C (+1600°F) for metal seat

Applicable Standards

Design: ANSI B16.34/ ASME VIII/ API 609
Face to face: API 609 / ISO 5752 short
Flange: B16.5/ B16.47/ASME VIII/ DIN/ ISO
Testing: API 598
Fugitive emission: ISO 150484-1
Fire test: BS 6755–API607-ISO FDIS 10497 NORSOK

Body Style

Double Flanged – short and long pattern
For FtF dimensions, please refer to relevant technical brochure


Carbon Steel
Stainless Steel
Alloy Steel
Duplex - SuperDuplex
Aluminium bronze
Austenitic Steel


ANSI CI.150 – CL.300
NP 6 - 10 – 16 - 25 - 40