Why you should opt for diaphragm actuated control valves

By "Apollo" Valves
May 8, 2018

Diaphragm actuated, hydraulic controlled valves are the most relied-upon regulators in the waterworks industry. They have been in use for over 100 years, and there is a good reason why they are the most common pressure-reducing valves in city water systems. Their core benefit is that they utilize the line’s pressure as their power source to operate, thus functioning without the need for external pressure and/or electricity.

Here are the top seven reasons why you should opt for diaphragm actuated control valves.

1. Cheaper to operate

A diaphragm actuated, hydraulic controlled valve will typically be less expensive to operate because it is self-powered, or because it naturally gets its power from the water in the pipeline system.

2. Can perform a wide range of functions

Diaphragm actuated control valves can perform various functions depending on what their pilot controls dictate. For example, in one control valve, you can have the valve reducing pressure in one direction, maintaining the right pressure to ensure guys upstream have enough pressure, and stopping reverse flow -- all in the same valve. You also could have a level-control altitude valve with a pressure sustaining element, which ensures that when a storage tank is being filled up, the main water line is not robbed of too much pressure.

3. If electronic control is required, it is simple to add

When you want to add some electric control to your diaphragm actuated control valves, you don’t need to install a large motor to close or open it. All you need is a simple pilot solenoid control than can be operated with DC power to shut even the largest valves in water pipelines. No expensive 3-phase power lines are required here.

4. Can be installed remotely

Diaphragm actuated control valves can be easily installed remotely away from any power source. They will run and adjust themselves accordingly without any input requirements. As long as the pilot controls have been well set, the valves will offer many years of service without any trouble, even when operating under water.

5. Can be maintained easily

The valves can be easily serviced while still in the pipeline. Unlike butterfly valves that need to be removed and checked for the level of wear and tear, the main diaphragm actuated control valves can be easily serviced without having to remove them from the pipeline. This makes the maintenance process easy and fast.

6. Changes can be made easily to the valves in the field

Modifications such as the addition of more limit switches, visible indicators, or the motorization of one of the pilots can be done easily to diaphragm valves while in the field, and it’s not difficult for an average technician to perform.

7. They offer great flexibility

The valves can be installed with various additional controls such as speed controls and trims to adjust the opening/closing of the valve and control cavitation respectively. These valves offer the flexibility to use additional controls to have them operate exactly as you want.

Diaphragm valves are quite simple to use and very reliable in terms of operation, maintenance, and cost-effectiveness.

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