Butterfly Valves Series 899
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Technical characteristics
- BrandButterfly
- MaterialSteel
Description
- Stem is standard 255, a duplex stainless which is more corrosion resistant and almost twice as strong as standard 316 stainless steel, eliminating shaft twisting and water hammer damage
- Top plate is machined to standardized drilling pattern allowing manual handle kits, and actuation, interchangeability also available in ISO patterns
- Stem brushing composed of full strength, corrosion resistant ertalyte - absorbs operator side thrust
- A third stem seal ensures absolute seal externally or internally for vacuum or pressure service
- Two patented O-seals give a sure secondary seal as the O-seal becomes part of the body and encircles the stem before entering the seat and disc area
- Patented (PTFE) Teflon lined seats have superior design which extends Teflon through the shaft hole to back of seat, ensuring total protection through seat and seals to Teflon o-seal and shaft on back side of seat
- Hub and seat seals prevent product from attacking stem or body
- Lug-style body has drilled and tapped lugs which meet ANSI 125 and 150 flange standards
- Flange seal provides an absolute seal to all flanges within specifications
- Series 892 (left) Series 899 (right) - Schedule 80 - bubble tight shut off 100 psi on all full teflon or rubber seat, 150 psi on all other combinations - 50 psi bubble tight shut off available in all series.
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Butterfly Valves Series 899
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