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Stainless Butterfly Valves

CIS carries a generous selection of stainless steel butterfly valves, which are ideal for many industrial applications. We carry Max-Seal resilient seat valves in three categories: ISO Series, Chem Tek Series, and Chem Flo Series. The ISO Series is designed for direct mount automation. The Chem Tek Series valves have a corrosion-resistant body. The Chem Flo Series is PDFE-lined for high corrosion and high purity. Valves are available in sizes from 2” to 12”.

Chem-Tek Series Model 53 Butterfly Valve (Stainless Steel Body)
 Chem-Tek Model 53 Butterfly Valve Brand Model Body Material ANSI Class Valve Type
MaxSeal Chem-Tek 53 Stainless Steel 125/150 Semi-Lug Style
Size Range Seat Material Disc Material  

2" - 12"

Buna-N, EPDM,
Viton, or Teflon

Stainless Steel,
Alloy 20,
or Duplex

Spec Sheet

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ISO Series Butterfly Valves (Stainless Steel Options)
MaxSeal Iso Series Butterfly Valves Brand Model Body Material ANSI Class Valve Type
MaxSeal ISO 51I (Wafer)
ISO 52I (Lug)
Stainless Steel 125/150 Wafer and Lug Styles
Size Range Seat Material Disc Material  
1 1/2" - 48" Buna-N, EPDM,
Viton, or PTFE
Stainless 316, Stainless 304,
Ductile Iron, or Aluminum Bronze

Spec Sheet

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Chem-Flo Series Butterfly Valves (Stainless Steel Options)
MaxSeal Chem-Flo Series Butterfly Valve Brand Model Body Material ANSI Class Valve Type
MaxSeal Chem-Flo 25 (Wafer)
and 26 (Lug)
Stainless Steel 150 Wafer and Lug Styles
Size Range Seat Material Disc Material  
2" - 12" Teflon, EPDM,
NBR, and Viton
PTFE-Coated SS, Stainless 316,
Alloy 20, or Duplex

Spec Sheet

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Why Choose Our High Performance (SS) Butterfly Valves?
 

When you need the highest-performance valves, you go with stainless steel. Stainless steel is one of the most versatile materials for manufacturing and fluid processing because of its wide range of compatibility. In fact, stainless steel has compatibility ratings of “Good” to “Excellent” for most chemical and compounds, even some of the harshest that exist. Stainless steel is also strong. It can withstand extremely high pressures, up to 1000psi WOG, and temperatures, around 2000F (1093C). You would be hard-pressed to create an environment too hot for stainless steel.

These stainless steel valves are butterfly valves, specifically. This means they have a disk inside that rotates 90 degrees around a central stem to open and close. When the disk is parallel to the flow, the valve is open. When the disk is perpendicular to the flow, the valve is closed. The disk on both sides of the stem looks a little like wings and is what gives the butterfly valve its name. In the pharmaceutical, chemical, and food industries, butterfly valves are often used to interrupt flow within a process. Butterfly valves are often actuated specifically for desired flow rates.

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