INOXPA VEEVALV, Инструкции по установке, обслуживанию и техническому обслуживанию

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2021/12 3.Receipt and Installation 9
3.8. WELDING
The welding work should only be undertaken by persons qualified, trained and equipped with
the necessary means to carry out this work.
Disassemble the valve before starting the welding work.
3.8.1. Weld/weld diaphragm valve.
• Disassemble the valve as indicated in section 7. Assembly and disassembly
• Weld the valve body to the pipework.
• When welding the valve body, it is very important to maintain the minimum distance (dimension A) enabling
disassembly of the valve for later checks and replacement of valve parts (e.g. diaphragm or actuator).
3.9. AIR CONNECTION TO ACTUATOR
• Connect and check the air connections as required. Single Acting Spring Return or Double Acting.
• INOXPA valves are supplied with Ø6 tube connections and a silencer in Single Acting actuators.
• Bear in mind the quality of the compressed air in accordance with the specifications described in chapter 8
Technical Specifications.
The compressed-air pressure for the NO and A/A actuators (normally open and double acting)
is less than in type NC (normally closed). See chapter 8.
Technical Specifications.
Excess pressure may seriously damage the diaphragm and actuator.
DN A
10 - ½” 211
25 - 1” 240
40 - 1
½”
308
50 - 2” 381
Pneumatic connections
Thread G 1/8” (BSP) for sizes
from DN ½” to DN 1
- 1/2”
and thread G 1/4” (BSP) for
sizes from DN 2” .
10
.30
0.
32.
00
04
10
.30
0.
32.
00
03