FireLock NXT™ Dry Valves 768 Series Installation, Maintenance, and Testing Manual
This manual provides detailed instructions for installing, maintaining and testing the Victaulic FireLock NXT 768 Series dry valve (model I‑768‑TCH). It includes safety warnings, required tools, recommended accessories, and step‑by‑step procedures for proper system setup.
The document also covers component dimensions, exploded diagrams, air‑pressure requirements, troubleshooting, and replacement procedures for internal parts such as diaphragms and seals. It is intended for trained installation personnel and service technicians. This manual is written in Chinese.
| Minimum air pressure | 13 psi / 90 kPa / 0.9 Bar |
|---|---|
| Maximum normal air pressure | 18 psi / 124 kPa / 1.2 Bar |
| Air pressure for VdS‑certified valves | 16 psi / 110 kPa / 1.1 Bar (min) – 19 psi / 130 kPa / 1.3 Bar (max) |
The valve requires at least 13 psi (90 kPa or 0.9 Bar) of air pressure.
Weekly inspections are listed in the manual under the “每週檢查” section.
Normal operating pressure should be between 13 psi (0.9 Bar) and 18 psi (1.2 Bar).
No, the 746‑LPA accelerator is limited to systems with air pressure below 30 psi (206 kPa).