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Butterfly Valve

Rubber lined butterfly valve

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote
Size Range
DN300 to DN3600
Pressure Class
PN6, PN10, PN16, PN25, PN40
End connection
Flanged

Standards

Design & manufacture
BS EN 593, AWWA C504, API 609
Face to face
EN 558-1/ISO 5752 Series 14, EN 558-1/ISO 5752 Series 13, AWWA C504
Materials
ISO 8501, ISO 8503
Other standards
EN ISO 12944-2 (C5 corrosivity category), EN ISO 12944-2

Configure your variant(manually adjust box on the right if you require a different spec)

Size
Pressure
End connection

Materials

All available material options per part. Click a pill to set it in the configurator.

Body
Disc
Seat
Stem
Shaft
O-Ring
Body Lining
Connection Flange
Disc Seal Ring
End Cover
Fasteners
Internal Lining
Key
Packing Gland
Pin
Retainer Ring
Shaft Bearing

Operating media

SewageChemical fluidsSeawaterDesalination process fluidsCorrosive fluids

Typical applications

  • Sewage
  • Chemical industry
  • Seawater treatment
  • Desalination

Coatings

Internal ebonite lining, thickness 3 mm or 5 mm, Shore D hardness 75±5External coating system C5 per EN ISO 12944-2: Option 1-Epoxy zinc-rich primer 60µm + Epoxy micaceous iron intermediate paint 120µm + Acrylic polyurethane finish paint 60µm; Total DFT 240µmExternal coating system C5 per EN ISO 12944-2: Option 2-Epoxy glass flake primer 80µm + Epoxy glass flake paint two layers 160µm; Total DFT 240µm

Approvals

EN1092 / ISO7005 (flange connection)EN558-1 / ISO5752 series 13 or 14 (face-to-face length)ISO 5210 (gearbox/actuator flange connection)

Features

  • Ebonite lining thickness 3 mm or 5 mm forming a continuous covering layer isolating ferrous substrate from service medium
  • Substrate sand-blasted to cleanliness Sa 2.5 per ISO 8501 and roughness medium G per ISO 8503 prior to lining
  • Ebonite vulcanisation processed with hot air or steam in vulcanisation kettle
  • Lining quality verified by visual inspection, electric spark detection (holidays/pinholes/cracks), adhesion test and hardness test
  • Ebonite hardness Shore D 75±5
  • Eccentric disc design
  • Replaceable disc seal ring
  • All internal and external fasteners in stainless steel grade 316L or duplex stainless steel
  • Suitable for installation in vertical or horizontal position
  • Lifting eye/lifting hook provided for vertical or horizontal lifting
  • Disc fully vulcanised with natural hard rubber
  • Body fully vulcanised with natural hard rubber
  • L-profiled disc seal ring fixed by retainer; bi-directional sealing; replaceable without special tools
  • Dry shaft design to prevent corrosion from service medium
  • Gearbox equipped with ISO 5210 flange connection for actuator; F10 standard specified
  • Multiple shaft O-rings for sealing; adjustable and replaceable
  • Streamlined low-profile disc for reduced flow resistance
  • Low-torque gearbox; operable by handwheel or actuator

Description

Butterfly valve with internal ebonite (vulcanised rubber) lining of 3 mm or 5 mm thickness on body and disc, in an eccentric design with a replaceable disc seal ring. Designed for sewage, chemical industry, seawater treatment and desalination applications. Available in sizes DN300 to DN3600 across pressure ratings PN6 to PN40.

Selection notes

This butterfly valve is a rubber lined, eccentric design, replaceable disc seal ring and vulcanised ebonite lining pattern, supplied for flanged installation.

Sizes run DN300 to DN3600, in PN6, PN10, PN16, PN25, PN40.

The body is offered in GJS500-7 (GGG50), GJS400-15 (GGG40) and WCB, so the grade can be matched to the service rather than the other way round.

Seat and trim options are EPDM. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.

Stated service media include sewage, chemical fluids, seawater, desalination process fluids and corrosive fluids.

It is catalogued for Water & Wastewater and HVAC.

Built to BS EN593, AWWA C504, API 609, EN558-1/ISO5752 Series 14 and EN558-1/ISO5752 Series 13.

Supplier remarks

  • Other Material are available on request

Available pressure classes

Pressure classes this product is rated to.

PN6PN10PN16PN25PN40

Used in

Water & WastewaterHVAC

Related guides

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