WAFER BUTTERFLY VALVE

PN16/PN25

Ideal for HVAC systems, our Wafer Butterfly Valves (PN16 & PN25) offer reliable flow control with easy installation. Constructed from durable ductile iron and available with various seat materials, these valves ensure efficient operation and long service life. Suitable for both water and neutral liquids, they provide excellent shut-off and throttling capabilities, making them a cost-effective solution for HVAC applications.

FEATURES & SPECIFICATIONS

  • Higher strength for disc with pinned single shaft ensure optimal alignment
  • Centrally mounted disc and hydrodynamic design minimize pressure loss
  • Can be installed at horizontal or vertical pipe line
  • Phenolic backed rubber seat is non-collapsible, stretch resistant and easily replaceable
  • Excellent flow characteristic with flow in either direction
  • Design conforms to BS EN 593 / BS 5155 / MSS SP-67 / API 609
  • Precision machining of disc for low operating torque

TECHNICAL SPECIFICATIONS

Size DN40...DN1200(PN16)
DN50...DN600(PN25)
Body Design Wafer
Working Pressure16bar(DN40...DN1200)
25bar(Ductile Iron Body; DN50...DN600)
Shell Testing Pressure x1.5 times
Seat Testing Pressure x1.1 times
Working Temperature-20°C ... 110°C (EPDM Seat)
-10°C ... 80°C (NBR Seat)
5°C ... 120°C (PTFE Seat)
-10°C ... 135°C (FPM Seat)
Operator Lever, Wormgear, Electric Actuator
Connection EN1092-2 PN10 / PN16 / PN25
JIS B2239 10K / 16K / 20K
ANSI B16.1 Class 125 / 150 / 250
Optional Accessories Chain Wheel, Limit Switch

INSTALLATION & OPERATION GUIDE

  • Ensure sufficient space for valves for easy installation, operation, maintenance and replacement.
  • Verify the valves are suitable for the operating condition such as medium, operating pressure / temperature, etc.
  • Check the I.D. of the flange and pipe to ensure free disc movement.
  • Valves shall be mounted on flanges only after the counter flanges have been welded to pipe and cooled down tot he atmospheric temperature. Welding heat may damage the rubber seat of the valves. Never weld the flanges with valves installed. No gasket is required for installation of rubber seated butterfly valves.
  • Position the valves carefully between flanges. Accurate centering between flanges is essential to prevent any damages and problems during operation.
  • Valves should be installed by placing bolts through the hole and tightening carefully, ensuring even contact between the flange and seat.Too tight of space may cause damages to the seat and should be avoided.
  • Cross tighten all the bolts diagonally to distribute the loads evenly over the valves.
  • Turning the valves to ensure sufficient disc clearance.
  • Valves equipped with manual operators must be operated manually. Excessive external force on the operation of valve may damage the valve and / or operator.
  • Blind flange with short pipe should be used for dead end installation.
FIFFCO-GLOBAL-LTD.-(White)

Address:
20-22 Wenlock Road, London, N1 7GU, United Kingdom.

Email:
info@fiffcoglobal.com,   sales@fiffcoglobal.com

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