STP-iX455/iXL455 Series Instruction Manual
4-20
Installation
4.3.7 Connecting the Vent Valve
The vent valve (optional accessory) provides controlled amounts of gas at atmospheric
pressure into the pump to shorten the stopping time of the STP pump (see Figure 4.13).
Connect the vent valve to the purge port shown in Figure 4.12.
Figure 4.14 shows example of a control method when introducing the atmosphere from
the primary side of the vent valve.
Refer to Section 8.1, "Vent Valve Output" for the operation.
(A) Purge port diameter VCR 1/4 (B) Purge port diameter KF10
Figure 4.13 Vent valve connection
Figure 4.14 Example of a control method when introducing the atmosphere (in dashed line)