N/A

• Pneumatically and electrically actuated with accessories
• Alternate discs:
  • (I): PVC : 3" - 12"
  • (II) PVDF :3" - 12"
• Stems in titanium or Hastelloy C®
• 2" square nut on stem (3" - 8" only)
• 2" square nut on gear operator (all sizes)
• Stem extensions (single stem and two-piece stem)
• Locking devices (gear type – standard on lever)
• Chain operators
• Manual limit switch - Asahi P-Series
• Tandem arrangements (Patented by A/A, Inc.)

N/A All solid thermoplastic butterfly valves sizes 3" through 12" shall be of the Type-57IL (isolator lug) PVC lined body design and bubble-tight seal (meeting or exceeding Class VI as defined by American National Standard Institute) with only the liner and disc as wetted parts. The lever handle (sizes 3" through 8") shall have a molded provision for a padlock. Gear operators shall be worm gear design, self-locking Plasgear™. The spherical disc design for higher Cv values shall be of solid abrasion resistant plastic. Liner shall be molded and formed around the body, functioning as gasket seals with convexring design on each side of the valve for lower bolt tightening torque and valve body shall have molded body stops and seat relief area to prevent overtightening of mating flanges. Valves shall be molded to accept 316 stainless steel A/A factory molded lugs. Valve shall be capable of having flange removed while maintaining full line pressure on upstream side for end of line service. Stem shall be of 316 stainless steel, non-wetted and have engagement over the full length of the disc. Valves shall have a molded ISO bolt pattern on top flange for actuator mount. PVC shall conform to ASTM D1784 Cell Classification 12454A, PP conforming to ASTM D4101 Cell Classification PP0210B67272. All (3" through 10") valves shall be rated to 150psi and 12" rated to 100psi. Butterfly valves shall be lug style, as manufactured by Asahi/America, Inc.

N/A What if fluid still flows when the valve is closed?
1. Make sure lever or gear is in a fully closed position (gear type may require travel stop adjustment).
2. Liner is damaged or worn. Replace liner.
3. Disc is damaged or abraded. Change disc.
4. Foreign material is caught between seat and disc. Remove the substance.
5. Mating flange bolts either overtightened or unevenly tightened. Retighten properly.

What if fluid leaks outside between seat and mating flange?
1. Seat damage. Change seat.
2. Mating flange bolts not tightened with proper torque or unevenly tightened. Retighten to the appropriate torque.

What if valve does not operate smoothly?
1. Foreign material is caught between disc and seat. Remove the material and clean.
2. Lever or gearbox is damaged. Replace.
3. Mating flange bolts overtightened. Retighten.