Butterfly Valves Flanged Type
Butterfly Valves Flanged Type - Image 2
Butterfly Valves Flanged Type - Image 3

Butterfly Valves Flanged Type

  • Application: Can be used in distribution networks, fire networks, water transmission, agriculture, water treatment plants, dams and power plants up to 50 degrees Celsius.
  • Fluid type: Raw water, drinking water
  • DN: 100 to 2000 mm
  • PN: 10 to 25 bar
  • Standards:
    • EN BS 5155
    • EN 558 – Series 14,
    • EN 1092-2
    • EN 12266
Category:

Description

Product material:

  • Body and disc: Ductile iron EN 1563/EN-GJS-400-15
  • Shaft material: Stainless steel DIN EN 10088-3, 1.4021
  • Rubber material: EPDM, NBR
  • Nominal pressure: PN10-PN16-PN25

Design & Produce Technical Specifications

  • Production standard: DIN EN 593 (DIN 335), INSO 4841
  • Flange drilling and dimension standard: DIN 1092-2 (DIN EN 2501)
  • Valve face-to-face standard: DIN 3202-F4 (DIN EN 558-1 series 14)
  • Paint coating: All cast iron parts are coated with blue epoxy powder paint RAL5005 or RAL5015 with a minimum thickness of 250 microns and with an electrostatic spraying mechanism, in accordance with DIN 30667 standard.

 

Final inspection test according to DIN EN 12266-1 and ISO 5208

 

Pressure drop coefficient in butterfly valves when the valve is fully open

 

Features

  • Disc eccentric bearing in the body
  • The suitability of the disk shape and form for current flow
  • Sealing from both sides
  • Ability to replace and adjust the sealing rubber when the valve is closed.
  • As the impeller rotates clockwise, the valve closes ninety degrees.
  • The design of flanged butterfly valves is double eccentric.

Maintenance, installation and operation instructions

Flanged butterfly valve


Abresan Tolou Bahar Roud (ATBR)

1. Transportation and handling

  • During transportation, avoid any impact to the valve body and sensitive parts.
  • To lift the valve, only use the molds or clamps built into the body.
  • If the valve is placed on a pallet, use a suitable forklift to move it.
  • To install heavy valves, be sure to use a crane with the appropriate capacity.

2. Maintenance conditions before installation

  • For long-term storage, milk should be kept at a moderate temperature (around 10 to 15 degrees Celsius) and away from sunlight.
  • Important note: During storage, the valve should be in the half-open position.
  • Ensure that the valve is completely closed and the internal parts are properly positioned (except in the case of long-term storage as mentioned).
  • The sealing rubber and seating surfaces must be clean and free of dust.

3. Important points in installation

  • The valve must be installed in the direction indicated by the arrow on the body.
  • Warning: Avoid burying the valve in the ground, especially in lines that deal with corrosive fluids.
  • Outdoors, the use of a canopy or canopy is essential for protection against environmental conditions.
  • Note (according to company instructions): Valves manufactured by this company open in a clockwise direction and close in a counterclockwise direction.
  • The use of a guard or protective frame is recommended to reduce potential risks.

4. Launch and Operation

  • The valve's performance should be checked at least once a month to ensure it opens and closes properly.
  • If used continuously, open the gearbox door every 6 months and inspect the internal components (gears and screws).
  • The bolts and nuts related to the seal, which are set at the factory, should not be tampered with.
  • Before operation, make sure that no hard objects are left in the flow path.
  • Serious warning: Never use a butterfly valve to test pipeline pressure.

5. Performance and support requirements

  • The valve should only be used within the temperature and pressure ranges indicated on the nameplate.
  • For use at high temperatures or with special fluids, prior coordination with the company is required.
  • In the event of a problem, the complete specifications of the valve along with a description of the problem should be reported to the factory so that the necessary guidance can be provided.

Abresan Tolou Bahar Roud (ATBR)

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