PIPING, TUBING, FITTINGS, AND HOSE

Subpart 1. Mounting; protection. All piping, tubing, and fittings shall be securely mounted and protected against physical damage. Subp. 2. Truck unloading line. The truck unloading line must be provided with an excess flow valve at the hose connection unless an approved quick closing internal valve is provided in the container unloading connection according to part 1513.0730 , subpart 2. Subp. 3. Liquid propane hose. Liquid propane hose must not be used for ammonia service according to part 1513.0170 .