Installation of the safety valve

Installation of Safety Valve must be carried out in accordance with the instructions provided. Below are general recommendations regarding the installation of safety valves of all types.

It is recommended to install a pressure gauge near the valve.
The axis of the spring in a spring-loaded safety valve should be vertical and located above the body.
The lever of a lever-weighted safety valve should be horizontal and located above the valve.
The installation of shut-off valves, filters, and check valves on pipelines connected to the safety valve is not allowed.
The diameter of the inlet pipe should correspond to the inlet diameter of the safety valve, and the diameter of the outlet pipe should be no less than the diameter of the outlet nozzle.
The length of the pipe connecting the safety valve and the tank or pipeline on which it is installed should be minimal.
Pipes from safety valves should be discharged into a drainage pit or outside of the rooms in which they are installed.
When combining discharge pipes from several valves, the cross-sectional area of the assembly pipe must be no less than the sum of the cross-sectional areas of the discharge pipes.
When installing several safety valves on one pipeline, the cross-sectional area of this pipeline should exceed by 1.25 times the total cross-sectional area of the valves installed on it.
The selection of the working medium from the pipeline connecting the safety valve and the protected area is not allowed.
The outlet pipe should be equipped with a funnel and a visible break.
After the installation of the safety valve, make sure that it opens at the specified pressure, and after water discharge, the valve sits completely on the seat, ensuring complete sealing of the closure.

Sequence for packing a threaded connection

1. Take a flax fiber string with enough threads so that its twisted diameter is approximately equal to the depth of the thread. The length of the string should provide for 1.5-2 times more windings than the number of thread turns.

2. Starting approximately 50-70 mm from the beginning of the string, slightly twist it, place it in the first thread turn, and, holding it with your hand, tightly wind a long branch of the string clockwise, placing it in each thread turn.

3. When reaching the end of the thread, continue winding with a second layer, shifting the turns to the beginning of the thread. The length of the second layer winding should be approximately equal to 2/3 of the thread length.

4. Wind the remaining end of the string (50-70 mm) similarly clockwise, from the end of the thread to its beginning.

5. Apply a layer of sealant to the winding surface.

6. Tighten the connecting elements by hand. With correct packing, the assembled element should turn 1.5-2 full rotations.

7. Continue tightening the element with a wrench or a torque wrench. In case the assembled element needs to be in a specific position, complete tightening it in the necessary position of the element.

With proper packing, during tightening, the force should not exceed the tightening torque listed below: