Hayward Industries, Inc.
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Needle Valves are used for accurate metering of fluids. Turning the thumbwheel moves a tapered piston into the PTFE seat to control the flow down to a few drops per minute. Precision-molded, fine-pitched stem threads permit this very fine metering flow control.

150 psi at 70°F
NVA Family
Needle Valves 2
Unit of Measure
Items NVA PVC
NVA1025T
1/4" PVC Needle Valves w/FPM o-ring; PTFE seat; threaded end connections 		NVA PVC
NVA1037T
3/8" PVC Needle Valves w/FPM o-ring; PTFE seat; threaded end connections 		NVA PVC
NVA1050T
1/2" PVC Needle Valves w/FPM o-ring; PTFE seat; threaded end connections 		NVA GFPP
NVA4025T
1/4" GFPP Needle Valves w/FPM o-ring; PTFE seat; threaded end connections 		NVA GFPP
NVA4037T
3/8" GFPP Needle Valves w/FPM o-ring; PTFE seat; threaded end connections
Size N/A 1/4" N/A 3/8" N/A 1/2" N/A 1/4" N/A 3/8"
Body Material N/A PVC N/A PVC N/A PVC N/A GFPP N/A GFPP
Seats N/A PTFE
Seals N/A FPM
End Connection N/A Threaded
A N/A 2.5 in
B N/A 0.88 in N/A 1.19 in N/A 1.19 in N/A 0.88 in N/A 1.19 in
C N/A 1.44 in
D N/A 2.50 in
E N/A 1.06 in
F N/A 1.25 in
G N/A 0.81 in
Weight N/A 0.20 lb N/A 0.22 lb N/A 0.25 lb N/A 0.20 lb N/A 0.22 lb