A20N Mosites Butterfly Valve
Engineering Data for the A20N Valve
2" - 12"
275 PSI SERVICE
The Mosites A20N Butterfly Valve was developed in response to market demand for a high cycle butterfly valve. Reduced torque and low profile disc increases the A20N cycle capabilities and economizes your actuation cost. Uniquely suited for applications involving continuous cycling, the Mosites A20N Butterfly Valve provides reliable service in flow control applications. Incorporating the same features as the A20, the A20N meets API 609 and MSS-SP 67 laying length (face-to-face) dimensions for quick replacement of standard butterfly valves.
- STEM - 17-4 PH STAINLESS STEEL ASTM
A 564 (ALLOY 625, HASTALLOY C,
MONEL ALSO AVAILABLE.)
One piece full length stem with integral "DD" disc position indicator.
- STEM RETAINER - ALLOY 625
ASTM B 446
Insures positive retention of stem.
- BODY - CAST CARBON STEEL ASTM
A 216 GRADE WCB WAFER OR LUG
Stronger than cast or ductile iron. Not subject to thermal shock. Also available in stainless steel and aluminum.
- DISC - INVESTMENT CAST - 316 SS
ASTM A744 CF3M (AL/BRZ, ALLOY 20,
HASTALLOY C, MONEL ALSO
AVAILABLE.)
Has superior corrosion resistance. Polished edge reduces torque requirements.
- EXTERIOR FINISH
High gloss epoxy. Maximum protection from environmental corrosion. - GASKET SURFACE
Bonded to valve body. Will not "fold" on insertion between flanges.
- BUSHING - RYTON/TFE
Reinforced top stabilizer bushing prevents side loading.
- SECONDARY STEM SEAL
Pressure activated Viton seal ring.
- PRIMARY STEM SEAL
Integrally molded O-Ring seal.
- BODY LINER
Molded and bonded to body; prevents seat blowout.
- PRIMARY STEM SEAL
Integrally molded O-Ring seal.
- BUSHING / RETAINER CUP - RYTON/TFE
Reinforced bottom stabilizer bushing prevents side loading and leak path to casting. Provides protection to stem from premature wear caused by metal-to-metal contact.
- DISC TO STEM CONNECTION
Flat drive mechanism.
The quarter turn operation of the disc is easily accomplished by the handlever (with friction lock positioner) or weatherproof gear operator. For pneumatic or electric actuation packages, see Automated Valves. The Mosites Butterfly Valve meets ANSI B16.104, Class VI, bi-directional shut off specifications, and is for use with ANSI B 16.5 (2"-12") dimensional 150# flanges. The valve can also be used for full vacuum and dead end service.
