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PureFlex 860 series valve take resilient seated butterfly valve technology to the nest generation in reliability. The valve is bubble tight at full rated pressure of 150psi, has triple stem seals for unmatched leak free dependability and it can operate at temperatures between (-)60°F to 250°F (consult factory for higher temperature applications). The 860 fiber reinforced vinyl ester valve body has a zero corrosion rate, the strength of steel with only ½ the weight, and is virtually indestructible. The 860 series is used for shut-off, throttling and transfer of many corrosive and erosive fluids and has the purity required for ultra-pure and food applications. |
The 860 series valve body is manufactured from Durcor-62™, PureFlex proprietary advanced
fiber reinforced composite. Durcor-62™ has tensile and compressive strengths that rival steel
along with outstanding impact resistance that is unmatched in the industry. Its reinforcing
fibers are long and interlocked, this interlocked reinforcement system transfers loads throughout
the fiber matrix, making the 860 series valve body virtually indestructible. The strength of
Durcor-62™ enables the 860 series valve to maintain ANSI face to face dimensions, be direct
threaded for lug design and allows it to be installed in any type of piping system without the need
for special considerations. Durcor-62™ excels in temperatures from (-)60ºF to 250ºF and has
only .001" of thermal expansion across its full temperature range.
Durcor-62™ vinyl ester resin backbone provides
excellent protection when exposed to aggressive
chemicals and hostile atmospheres such as acid
sprays, bleach, salt water and high chlorides. The
860 series valve body out performs ductile iron
valves not only in corrosive environments but
non-corrosive as well. Its lightweight advantage
reduces the need for heavier support structures
for hanging, eliminates the need for extra
equipment and personnel for valve installation
and reduces pipe strain once installed. The 860 
