EPDT-089a
MODEL GD-26GS, GD-27GS
Pressure Reducing Valve
PRODUCT MANUAL
Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product,
please read this manual before use. This manual shall be kept with care for future reference.
The symbols used in this manual have the following meanings.
Warning
This symbol indicates a potentially hazardous situation that, if not avoided, could
result in death or serious injury.
Caution
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.
Table of Contents
Overview ····································································· 1
1. Feature ···································································· 1
2. Specifications
2.1 Specifications ······················································ 1
2.2 Nominal size selection ······································ 2 - 3
2.3 Flow rate characteristics chart ································ 3
2.4 Pressure characteristics chart ································· 4
3. Dimensions and weights ·········································· 5 - 6
4. Operation ································································· 7
5. Maintenance and inspection
5.1 Precaution for operation ···································· 7 - 8
5.2 Warning and caution for operation ··························· 8
5.3 Piping example ···················································· 8
5.4 Adjusting procedure ·············································· 9
5.5 Troubleshooting ··················································· 9
5.6 Warning for disassembly and inspection ·················· 10
5.7 Disassembly ······················································ 10
6. Exploded view ···················································· 11 - 12