Butterfly Valve Overview

Butterfly Valve Overview

Our Eurotorc Butterfly Valves are available in a wide range of sizes and materials from DN40 to DN1000. All Eurotorc Butterfly Valves are pressure tested to 110% of the rated pressure to assure zero leakage. The complete range has been developed through years of industrial experience, research and development. Eurotorc has designed a Butterfly Value that meets the requirements of flow control applications around the world.

Technical Data

Flange Accomodation

  • EN1092-1 PN10/16
  • ANSI B16.5 Class 150
  • BS10 Table 'E'

Other standards on request.

Face To Face Dimension

  • EN558 Series 20
  • ISO 5752 Series 20
  • BS 5155
  • API 609 Table 1

Top Mounting Flange

  • ISO 5211

Compliant Pressure Equipment

  • Pressure Equipment Directive (97/23/EC)

Pressure Testing

  • BS6755 & API 598 (Zero Leakage)

Pressure Rating

  • DN50 - DN300: 16 Bar
  • DN350 - DN600: 10 Bar

Valve Features

  • Size Range: DN40 - DN600
  • Bi-directional factory pressure testing at full rating provides 100% bubble tight isolation
  • Wafer thin disc with polished edge, provides minimal contact area and improved flow rates
  • ISO 5211 mounting flange and square drive stem provides direct mounting of actuation
  • Body finish: Modified RAL 5015 'Flat Heat Applied Enamel'
  • Body finish thickness - 100 micron
  • Upper Stem supported with 3 x Nylon PA66 Bearings
  • Lower Stem supported with 2 x Nylon PA66 Bearings
  • Bearings manufactured from corrosion resistant materials ensuring continued ease of operation
  • Seat can be replaced without special tools
  • Full range of Eurotorc manual and automatic operators are available
Butterfly Valve Overview

Parts List/Materials Selection

1. Body

  • Cast Iron GG25
  • Ductile Iron GGG40
  • Carbon Steel ASTM A216 WCB
  • Stainless Steel ASTM A351 CF8M

2. Disc

  • Ductile Iron GGG40 Rilsan Coated
  • Ductile Iron GGG40 Nickel Plated
  • Ductile Iron GGG40 Epoxy Coated
  • Aluminium Bronze ASTM B148
  • Stainless Steel ASTM A351 CF8
  • Stainless Steel ASTM A351 CF8M
  • Stainless Steel ASTM A351 CF8M (Polished)

3. Stem (Upper & Lower)

  • Stainless Steel ASTM A582 Type 416

4. Seat

  • EPDM
  • NBR
  • FKM
  • Silicon
  • EPDM (WRAS Approved)
  • Neoprene

5. Bearing

  • Nylon PA66

6. Stem Seal

  • NBR

7. Anti Extrusion Ring/Follower

  • Carbon Steel

8. Circlip

  • Spring Steel

9. Lower Stem Plug/Cover

  • DN50 - DN300: Zinc Plated A10 Forged Steel
  • DN350 - DN600: RAL5015 Painted Mild Steel

10. Lower Stem Seal

  • PTFE
Parts List/Materials Selection
Eurotorc Butterfly Valve Brochure

Download Eurotorc Butterfly Valve Brochure

Please download a copy of the Eurotorc Butterfly Valve Brochure. Please contact us for more information on this product.