Liquid Controls Air Actuated & Differential Check Valves K-7, K-15, & K-30 - Manual (Page 6)

6
V-15
Valve
Mechanical Register
K-15 Check Valve
Air Eliminator
Strainer
M-25 PD Meter
K-15 Valves
New Installations
When ordered with a new metering system, the Check
Valve is supplied mounted to the metering system as
shown in the example to the right. A line must be
connected to the flange on the outlet side of the check
valve. This flange connection is 3” NPT.
Finally, install a vent line from one port of the check valve
to the air eliminator. Plug the other side of the check
valve.
Retrofit Installations
Depending on the existing configuration, adding a Check
Valve may require modification of the outlet piping.
After the internal pressure is relieved from the system,
the output line can be disconnected from the output side
of the meter. In the example to the right, the output line
would be connected to the V-15 valve. The check valve
assembly can then be connected to the output side of the
V-15 valve.
Use the four bolts and washers to fasten the check valve
assembly to the V-15 valve. The check valve has an arrow
showing the direction of flow. Ensure that the valve is
properly oriented.
Tighten the bolts in a crossing pattern. Once the check
valve is secure, the output line may be reconnected to
the output side of the check valve. The output fitting is 3”
NPT.
A vent line must be connected from one side of the check
valve to the air eliminator. Plug the other side of the check
valve.
! ! ! ! !WARNING!
Before disassembly of any meter or accessory component, ALL INTERNAL PRESSURES MUST
BE RELIEVED. Pressure must be 0 (zero) psi. Close all liquid and vapor lines between the
meter and liquid or gas pressure source (such as the supply tank, discharge lines and supply
lines).