Thermoplastic Butterfly Valve features non-wetted shaft.
August 6, 2010 -
Offering direct replacement for ISO-5752 short pattern metal butterfly valves, without any modification to existing piping system, Type 57LIS comes in 3-8 in. sizes with PVC body and PP disk for chemical resistance. Made of 316 stainless steel, shaft has full engagement over entire length of disk and is totally isolated from media. Applications include chemical processing, water and wastewater, landfills, irrigation, food processing, and mining.
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Original Press release
Asahi/America
35 Green St., P.O. Box 653
Malden, MA, 02148
USA
Type 57LIS Butterfly Valve (NEW-Now Available)
Direct Replacement for ISO-5752 Short Pattern Metal Butterfly Valves
Description
We have expanded our line of butterfly valves with the introduction of the the Type 57LIS, which provides for easy direct replacement of metallic butterfly valves and conforms to ISO-5752 short face-to-face dimensions.
The Type 57LIS butterfly valve is an industrial quality thermoplastic valve that directly replaces metallic butterfly valves, without any modification to the existing piping system, in applications where metal valves constantly corrode. The face-to-face dimensions of the Type 57LIS (the distance between the two existing flanges), are the same as those of the metal valves that the Type 57LIS replaces.
Features and Benefits
Standard model (3" - 8") has PVC body and PP disc for better chemical resistance at temperatures higher than can be achieved with PVC.
Our 316 stainless steel shaft has full engagement over the entire length of the disc and is a non-wetted part, totally isolated from the media.
Only solid and abrasion-resistant plastic disc and elastomeric liner are wetted parts.
ISO bolt circle on top flange - no body or stem modifications required for accessories.
Materials
Sizes: Lever: 3" - 8"
Gear: 3" - 8"
Models: Wafer or Lug style
Operators: Lever and gear
Body: PVC
Discs: PVC, PP and PVDF
Seats: EPDM, FKM and Nitrile®
Seals: EPDM, FKM and Nitrile®
Stems: 316 stainless steel, titanium, Hastelloy C®
Available Actuators
Series 79 Pneumatic
Series 92 & 94 Electric
Series 83 Electromni
Options
Pneumatically and electrically actuated with accessories
Alternate discs:
- (I) PVC : 3" - 8"
- (III) PVDF : 3" - 8"
Gear operators for 3" - 8"
Stems in 304 stainless steel, titanium, Hastelloy C® etc.
2" square nut on stem
2" square nut on gear operator
Stem extensions (single stem and two-piece stem)
Locking devices (gear type - standard on lever)
Chain operators
Manual limit switch
Tandem arrangements (patented by A/A, Inc.)
Typical Applications
Chemical Processing
Water & Wastewater
Landfills
Irrigation
Food Processing
Mining
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