Installation, Operation and Maintenance Manual
【
H-A077-E-00
】
3-Way Ball valve Type 23 Electric actuated Type Z 15
～
50mm (½”-2”)
10
８. Installation procedure
Flanged end
- When suspending and supporting a valve, take care and do not stand under a suspended
valve.
-
Do not to over-tighten the Union nut. (The valve can be damaged.)
-
Do not use a pipe wrench when tightening the union nut. (The valve can be damaged.)
- Do not tighten the bolts and nuts with more than the torque shown in
Table 8-2
. (The valve can
be damaged or leaks.)
- Be sure to conduct a safety check on all hand and power tools to be used before beginning
work.
- When conducting piping work, wear personal protective equipment appropriate to the contents
of work. (Failure to do so may cause an injury.)
- When installing pipes and valves, ensure that they are not subjected to tension, compression,
bending, impact, or other excessive stress.
- When installing, disassembling, or reassembling the piping, fix the End connector.
- When installing a piece of equipment at the end of the piping line, be sure to keep the
secondary (Downstream) End Connector and Union nut installed on the valve.
- When connecting a ASAHI AV Valve to metal piping, take care not to let the pipe stress on the
ASAHI AV Valve.
- Use flat faced flanges for connection to AV Valves.
- Ensure that the mating flanges are of the same standards.
- Be sure to use sealing gaskets (AV Gasket), bolts, nuts, and washers and tighten them to
specified torques. (When a non-AV gasket is used, a different tightening torque instruction
should be followed.)
- The parallelism and axial misalignment of the flange surface should be under the values shown
in the
Table 8-1
to prevent damage the valve. (A failure to observe them can cause destruction
due to stress application to the pipe.)
- Tighten the bolts and nuts of the connection flange diagonally to the specified torque value.
(There is a risk of leakage or damage)
