CHECK VALVES
248.588.1500     KNOLL
CHECK VALVES - 64 SERIES

APPLICATION
Check valves, also known as “non-return valves”, are designed for use in process piping installation to prevent reverse flow.
WORKING PRINCIPLE
A check valve opens when the pressure below the valve plug exceeds the pressure above the valve plug and the spring force. The valve closes when pressure equalization has been achieved.
STANDARD DESIGN
The forged stainless steel valve body ensures non-porous, smooth surfaces and dimensionally stable construction. The valve body is in two parts, assembled by means of a standard clamp and sealed with a standard gasket. The self-draining design of the lower valve body enables flushing of the product. Ribbed construction of the stainless steel disc resists heavy pressure hammer, minimizes the resistance to flow and also serves as a guide to the valve plug. All seats and seals are made from FDA approved materials.
AVAILABLE SIZES
1", 1-1/2", 2", 2-1/2", 3", 4"
OPTIONS
End Connections, Sanitary Clamp, Butt-Weld, I-Line, Vitone/Silicone O-Rings and Gasket on request.
SPRINGS
Stronger springs are available for higher pressures.
 
SANITARY CLAMP CHECK VALVES

304L SANITARY CLAMP CHECK VALVES

ITEM #SIZEMATERIALSEALFINISHUNIT PRICEQTY
K64CV104PSS1"304LPTFEStd (180G)$184.00
K64CV154PSS1-1/2"304LPTFEStd (180G)$234.00
K64CV204PSS2"304LPTFEStd (180G)$316.00
K64CV254PSS2-1/2"304LPTFEStd (180G)$464.00
K64CV304PSS3"304LPTFEStd (180G)$606.00
K64CV354PSS4"304LPTFEStd (180G)$885.00

316L SANITARY CLAMP CHECK VALVES

ITEM #SIZEMATERIALSEALFINISHUNIT PRICEQTY
K64CV106PSS1"316LPTFEStd (180G)$220.00
K64CV156PSS1-1/2"316LPTFEStd (180G)$294.00
K64CV206PSS2"316LPTFEStd (180G)$382.00
K64CV256PSS2-1/2"316LPTFEStd (180G)$561.00
K64CV306PSS3"316LPTFEStd (180G)$734.00
K64CV356PSS4"316LPTFEStd (180G)$1,068.00
BUTT-WELD CHECK VALVES

304L BUTT-WELD CHECK VALVES

ITEM #SIZEMATERIALSEALFINISHUNIT PRICEQTY
W64CV104PSS1"304LPTFEStd (180G)$174.00
W64CV154PSS1-1/2"304LPTFEStd (180G)$231.00
W64CV204PSS2"304LPTFEStd (180G)$300.00
W64CV254PSS2-1/2"304LPTFEStd (180G)$439.00
W64CV304PSS3"304LPTFEStd (180G)$574.00
W64CV354PSS4"304LPTFEStd (180G)$838.00

316L BUTT-WELD CHECK VALVES

ITEM #SIZEMATERIALSEALFINISHUNIT PRICEQTY
W64CV106PSS1"316LPTFEStd (180G)$209.00
W64CV156PSS1-1/2"316LPTFEStd (180G)$278.00
W64CV206PSS2"316LPTFEStd (180G)$360.00
W64CV256PSS2-1/2"316LPTFEStd (180G)$531.00
W64CV306PSS3"316LPTFEStd (180G)$692.00
W64CV356PSS4"316LPTFEStd (180G)$1,010.00


KNOLL     248.588.1500
CHECK VALVES

CHECK VALVES - 64 SERIES

TECHNICAL SPECIFICATIONS
MATERIAL
Product Wetted Steel Parts: AISI 316L or AISI 304L
Other Steel Parts: AISI 304
FDA SEALS
O-Ring: PTFE
Gasket: PTFE
Optional: Vitone or Silicone
NOMINAL PRESSURE
Max. Product Pressure: 150 PSI maximum (10 Bars)
Standard Cracking Pressure: 0.5 PSI (0.035 Bars)
SURFACE FINISH
Surface in Contact with Product: Ra < /= μ in (Grit 220g)
Optional: Ra <= μ in (Grit 320g)
*Electropolishing available upon request
*Pressure drop/capacity deiagram on request
DIMENSIONS
Sanitary Clamp

DIMENSIONS 1" 1-1/2" 2" 2-1/2" 3" 4"
A 3-3/4 3-3/4 4-3/64 4-13/32 4-31/32 5-3/8
B 2 2-17/32 3-1/64 3-19/32 4-11/16 5-5/64
ID 7/8 1-3/8 1-7/8 2-3/8 2-55/64 3-27/32





Butt-Weld
DIMENSIONS 1" 1-1/2" 2" 2-1/2" 3" 4"
A 3-3/4 3-3/4 4-3/64 4-13/32 4-31/32 5-3/8
B 2 2-17/32 3-1/64 3-19/32 4-11/16 5-5/64
OD 1 1-1/2 2 2-1/2 3 4
ID 7/8 1-3/8 1-7/8 2-3/8 2-55/64 3-27/32