Brochure

Thermoplastic Valves Product Guide & Engineering Specifictions
Diaphragm 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 814
Due to Material Cost Variations, Prices Sub
j
ect to Chan
g
e. Check On-line Catalo
g@
www.spearsmf
g
.com
No. Component Qty Material
1 Body Inlet 1 PVC/CPVC
2 Diaphragm 1 Santoprene™ Rubber
3 Nut 1 PVC/CPVC
4 Body Outlet 1 PVC/CPVC
Features – PVC, CPVC
Spears
®
Diaphragm Check Valves do not depend on gravity,
springs, or even reverse fl ow to seat. Resilient thermoplastic
elastomer (TPE) diaphragm is the only moving component,
which automatically seats when fl ow stops. No sticking, no
chatter. This specialty elastomer exhibits high fl ex and tea
r
resistance to provide excellent durability and long life. Valves
are available in PVC and CPVC material size of 3/4" with
socket and threaded end connections.
•
“Normally Closed” operation is excellent for applications
with low seating pressure
• Low cracking pressure, 1 to 1-1/2 psi
• Leak-free, silent operation
• Installs just like a Union – in ANY position
• Pressure rated to 150 psi full-flow (open), 100 psi back
pressure (closed) for water @ 73°F
• Santoprene™ TPE diaphragm seat provides extended life
and durability – fully serviceable and replaceable
• All materials are NSF
®
Certifi ed for use with potable water
Dimensions & Weights
Nominal
Size
Dimension Reference (inches, ±1/16)
Approx. Wt. (Lbs.)
A
B
CD
Socket Threaded PVC CPVC
3/4 1-7/16 2-1/8 2-5/8 4-1/8 2-21/32 .32 .34
Quick-View Diaphragm Check Valve Selection Chart
Valve
Size
Seat Material
PVC Material
1
Presure Rating
Socket Threaded
3/4 SANTOPRENE™ 6562-007 6561-007 150 psi @ 73°F Full Flow (open) 100 psi Back Pressure
1: For CPVC Diaphragm Check Valve, add the letter “C” to the part number (e.g. 6562-007C)
Sample Engineering Specification
All thermoplastic Diaphragm Check Valves shall be Diaphragm
design constructed from PVC Type 1, ASTM D 1784 Cell
Classification 12454 or CPVC Type IV, ASTM D 1784 Cell
Classification 23447. Valves shall be socket or threaded ends.
All diaphragms shall be Santoprene™ TPE material. Valves
shall be pressure rated at 150 psi full-flow (open), 100 psi
b
ack pressure (closed) for water @ 73°F, as manufactured by
Spears
®
Manufacturing Company.
4
1
2
3
D
B
C
A
Santoprene™ is a trademark of Exxon Mobil Corporation
NOTE: Check valves MUST be installed with the valve’s FLOW arrow pointing in the direction of the fl ow. Flow velocity
should not exceed 5 ft./sec. Do not use Union Nut to draw together system components. Using a strap wrench, tighten hand-
tight plus no more than 1/16 turn. Do not use conventional pipe wrenches.
Replacement Parts
FLOW