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Thermoplastic Valves Product Guide & Engineering Specifictions
Industrial Swing Check Valves
Made in the U.S.A. Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Page 798
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Designed for optimum flow, quick response and positive
shutoff with minimum turbulence, this industrial grade
Swing Check Valve is used in a variety of industrial and
chemical processing applications where high volume fluid
transfer is required. Suitable for horizontal or up-flow
vertical applications. Available in PVC, CPVC and Glass
Filled Polypropylene, IPS 3/4" - 8" with Flanged Body.
Engineered for Quick Response, Full-Flow Fluid Transfer
• Heavy Bodied All-Plastic Interior Construction
• Top Access & O-ring Sealed Drain Plug for In-line
Servicing
• Standard O-ring type Seat & Seals in EPDM or FKM
• Sizes 3/4" - 4" Pressure Rated to 150 psi @ 73°F, 6"
Pressure Rated to 100 psi and 8" to 70 psi @ 73°F
• Stainless Steel External Hardware
• Fully Serviceable, Replaceable Components
• Suitable for Vacuum Service
• Assembled with Silicone-Free, Water Soluble Lubricants
• External Arrow Position Indicator
1
• External Counter Balance
1
• Natural Polypropylene Body
1: Available as assembled valve or kit for installed valve
Options & Accessories
Features – PVC, CPVC & PP
Sample Engineering Specification
All thermoplastic check valves shall be flanged Swing
Check type constructed from PVC Type I, ASTM D 1784
Cell Classification 12454 or CPVC Type IV, ASTM D 1784
Cell Classification 23447, or Polypropylene, ASTM D 4101.
All O-rings shall be EPDM or FKM. All valves components
shall be replaceable. All valves shall have top-entry access
with O-ring sealed drain plug for in-line servicing. All valves
shall have optional external Arrow Position Indicator or
optional external Counter Balance. All 3/4" - 4" valves shall
be pressure rated to 150 psi, all 6" valves to 100 psi, and all
8" valves to 70 psi for water at 73°F, as manufactured by
Spears
®
Manufacturing Company.
Quick-View Valve Selection Chart
1: For CPVC valves, add the letter "C" to part numbers listed (e.g. 4423-025C).
2: For valve with Arrow Position Indicator, add the letter "I" before the dash separator (e.g., 4423I-025).
3: For Polypropylene valves, add the letter "P" to the part number (e.g. 4423-025P).
Valve Size O-ring Material Part Number
1,2,3
Pressure Rating
3/4
EPDM 4423-007
150 psi
Non-Shock
Water
@ 73°F
FKM 4433-007
1
EPDM 4423-010
FKM 4433-010
1-1/4
EPDM 4423-012
FKM 4433-012
1-1/2
EPDM 4423-015
FKM 4433-015
2
EPDM 4423-020
FKM 4433-020
2-1/2
EPDM 4423-025
FKM 4433-025
3
EPDM 4423-030
FKM 4433-030
4
EPDM 4423-040
FKM 4433-040
6
EPDM 4423-060
100 psi @ 73°F
FKM 4433-060
8
EPDM 4423-080
70 psi @ 73°F
FKM 4433-080
General Installation Information: Industrial
Swing check valves are designed for horizontal installations,
but may be installed in up-flow only vertical position. Check
valves should be installed a minimum of ten (10) pipe
diameters from pump or other sources of turbulence. Check
valves MUST be installed with the valves FLOW arrow
pointing in the direction of flow. Do not install valve upside
down. Normal flange-bolt assembly in top holes of the valve
flange requires bolt insertion through the companion flange
with nuts secured on Swing Check flange side. Certain
system configurations involving direct connection of a
Swing Check Valve to other flanged equipment may require
consideration of this bolt clearance.