Injection Check Valve And Discharge Tubing Installation - Milton Roy Roytronic A Series Instruction Manual

3.9

Injection Check Valve and Discharge Tubing Installation

40°
Variation
Acceptable
Injection
Check Valve
The Injection Check Valve prevents backflow from a treated line. Install the injection
check valve at the location where chemical is being injected into the system. Any size
NPTF fitting or pipe tee with a reducing bushing to 1/2" NPTF will accept the injection
check valve. Teflon tape should only be used on threads that are connected with pipes.
®
When installing the Injection Check Valve, be sure to position it so that the valve enters
the bottom of your pipe in a vertical position. Variations left and right within 80° are
acceptable (see illustration).
After cutting an appropriate length of tubing, connect tubing to the injection check valve
then back to the discharge side of the pump head. Make sure it does not crimp or come
into contact with hot or sharp surfaces (see Tubing Connections, Section 3.3).
Pipe Cross
Section
Variation
Acceptable
Typical Injection Check Valve Installations
Flow
40°
CORRECT
Use Teflon
Tape here on
Pipe threads only
Do NOT use
Teflon tape
On machined
Threads
INSTALLATION
1" Pipe Tee
Reducing
1" to 1/2" NPT
(Customer Supplied)
Injection
Check Valve
Flow
Bushing
15