Butterfly Wafer valves

Created by an experienced team of valve experts

Size Range

• 32mm to 600 mm dia (1 ¼” to 24”)

Operating Options

• Lever/Gear Box/Pneumatic Actuator

Salient Features

• Body : Wafer
  Wafer type valve bodies are provided with 4 centering lugs to enable the valve to be appropriately centered between flanges drilled according to various standards namely DIN 2501 PN 6 / 10 /16, EN1092 - 2 PN 6 /10 /16, BS 4504 PN 6 / 10 / 16, BS 10 table D & E, ANSI 125 / 150, AS 2129 table D & E, IS 6392 table 10 to 20, IS 6418 table 6 to 9. For mounting with any other flanges SAAPL is to be contacted.

• Long neck body
  The valves are provided with long neck to enable application of sufficient insulation while used on HVAC lines.
• Single Piece Stem-upto 12” (300mm)
  Single piece stem for positive disc alignment is retained inside the body by means of a retainer to ensure the stem is anti-blow out.
• Internal stem to disc connection
  A very positive internal square drive unlike grooved pin drive, where the pins often fail and lead to leakage and failure in operation.
• Mounting pad
  Valves are provided with actuator mounting pads according to ISO 5211 for direct mounting actuator and gear units. No necessity for additional mounting bracket and coupling arrangements.

Mounting pad details

DN	b	Øc	e	øf	Ød	N°
32	11	F05‐50 / F07‐70	22.0	90	7 / 10	4
40	11	F05‐50 / F07‐70	22.0	90	7 / 10	4
50	11	F05‐50 / F07‐70	22.0	90	7 / 10	4
65	11	F05‐50 / F07‐70	22.0	90	7 / 10	4
80	11	F05‐50 / F07‐70	22.0	90	7 / 10	4
100	14	F07‐70	22.0	90	10	4
125	14	F07‐70	22.0	90	10	4
150	14	F07‐70	22.0	90	10	4
200	17	F10‐102	34.5	150	12	4
250	22	F10‐102	34.5	150	12	4
300	27	F12‐125	34.5	150	14	4
350	27	F12‐125	35	150	14	4
400	27	F14‐140	35	175	18	4
450	27	F14‐140	35	175	18	4
500	36	F14‐140	46	175	18	4
600	46	F16‐165	55	210	23	4

• Epoxy Powder coated
  Valve is powder coated using state of the art electro static powder coating equipment for excellent corrosion, abrasion resistance and glossy finish.
• Replaceable liners
  The liners are provided with hard phenolic / Aluminum back-up enabling easy replacement and increased valve life. These hard backup replaceable liners possess advantages of both loose liners and body in-situ molded liners.
• Stretch Resistant
  Valves with loose liners, when operated frequently, flex the seats beyond fatigue limit and the seats get torn. SAAPL seats, integrally molded and bonded to hard back-up rings, have superior resistance to flexing and stretching.
• Better strength
  SAAPL liners possess necessary strength against high velocities of flowing fluid because of the bonding. Also, they do not buckle when sandwiched between flanges.
• No Corrosion of Body material underneath the seat
  Valves with loose liners and without the back-up expose the body material to the line fluids when the seat is torn. SAAPL liners with hard back up eliminate such a possibility.
• Increased Valve Life
  In the case of valves with seats molded directly to the body, the valve is condemned if the liner is torn. SAAPL valves take second innings with the newly replaced liners.
• Low Inventory Cost
  Keeping stock of just SAAPL liners will be cheaper to keeping in-situ body molded valves.
• Changeable to Suit the Service Condition
  In SAAPL valves, changing over to a liner of different polymer to suit the change in process (fluid, concentration levels and temperature) is easy and cheaper than replacing the whole valve.
• Tight Shut-off
  The valves will have perfect bi-directional sealing against the rated differential pressures and in vacuum applications.
  Disc is available in different options to suit various service media and conditions. Choice of materials will include SG iron, Stainless steel and Aluminum bronze.
  Wide choice of seat liner material is available to suit different service and temperature requirements. The seats are permanently engraved with the code letters given inside brackets for easy identification, to avoid mix-up and to ensure use of right material for right application.