Brochure

Thermoplastic Valves Product Guide & Engineering Specifictions
In-Line Adjustable Spring Check Valves
Page 815 Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Spears
®
Manufacturing Company
Due to Material Cost Variations, Prices Sub
j
ect to Chan
g
e. Check On-line Catalo
g@
www.spearsmf
g
.com
Features - PVC
Adjustable feature allows control of back pressure in system, reduces water hammer, and prevents siphoning. Easily adjusts
to hold back from 5 to 32 feet of pressure head, 1 psi (2.3 feet of head) for each full turn of the adjustment screw. Ideal fo
r
landscape and irrigation applications, quickly installs with space saving in-line design.
•
2 - 14 lbs. Adjustable Spring Tension (5 to 32 feet of head) Factory Preset to Approx. 5 psi (12 feet of head)
• Stainless Steel Adjustment Spring with EPDM Seat
• Pressure Rated to 200 psi for Water @ 73°F
• Standard Unit Available in 1/2", 3/4", 1" & 1/2" x 3/4" with Fipt Inlet x Mipt Outlet Configuration
• Plus, Popular Configuration Options of 1/2" Mipt Inlet x Fipt Outlet & 3/4" Fipt Inlet x Fipt Outlet
Sample Engineering Specification
All thermoplastic check valves shall be Adjustable Spring Check type constructed from PVC Type I, ASTM D 1784 Cell
Classification 12454. All Valve Seats shall be EPDM. All valves shall have external Arrow Flow Indicator. All valves shall
b
e pressure rated to 200 psi water at 73°F, as manufactured by Spears
®
Manufacturing Company.
FLOW
Quick-View Valve Selection Chart
Standard Unit - Female Inlet x Male Outlet
Size Part Number Configuration
1/2 S1102-05 Fipt x Mipt (Inlet x Outlet)
3/4 S1102-07 Fipt x Mipt (Inlet x Outlet)
1 S1102-10 Fipt x Mipt (Inlet x Outlet)
1/2 x 3/4 S1102-05-07 Fipt x Mipt (Inlet x Outlet)
Male Inlet x Female Outlet Option
Size Part Number Configuration
1/2 S1101-05 Mipt x Fipt (Inlet x Outlet)
Female Inlet x Female Outlet Option
Size Part Number Configuration
3/4 S1100-07 Fipt x Fipt (Inlet x Outlet)