Components for Control Systems

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• Needle Valves for Control Systems
• Hydraulic-Pneumatic Interface Valves for Control Systems
• Check Valves for Control Systems
• Relief Valves for Control Systems
• Visual Pressure Indicators for Control Systems
• Shuttle Valves for Control Systems

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• Well Control Solutions
• Well Control Solutions - Spanish Version

High-quality components are utilized in the construction of eP’s control systems. These components include parts manufactured by Pneu-Hydro, a leading manufacturer of pneumatic and hydraulic valves. Some of the Pneu-Hydro products used in our control systems include:

Needle Valves for Control Systems

Low profile, high pressure (6,000- and 10,000-PSI) needle valves ideally suited for panel-mounted or other limited space applications. Teflon stem packing provides isolation from the process fluid and prevents contamination and lubrication washout. Standard features include self-aligning swivel pintles to minimize seat scoring, Teflon stem seal, and 316 SS construction to provide maximum compatibility with corrosive fluids.

Hydraulic-Pneumatic Interface Valves for Control Systems

This hydraulic, three-way, two position, normally closed, 316 SS valve permits a low-pressure pneumatic signal to control a high-pressure hydraulic signal. In this unique spool valve design, the usual pilot diaphragm is replaced by a piston. The use of a stainless steel piston and an O-ring or Teflon “cup” seal eliminates failures due to diaphragm leakage and incompatibility of diaphragm with process fluids. The high ratio of hydraulic power pressure to pilot control pressure insures safe operation and positive control under all conditions.

Check Valves for Control Systems

These check valves seal bubble tight even without back pressure and provide a smooth, minimum resistance flow path when open. The poppet is spring loaded for operation in any position. The spring load is borne by a metal stop, rather than by the soft seat, ensuring long seal life and minimum maintenance. Operation is smooth and chatter-free.

Relief Valves for Control Systems

These right angle relief valves are pressure balanced internally and pressure referenced to atmosphere. This yields insensitivity to downstream pressure and permits the valve to be used as an accurate back-pressure regulator.

Visual Pressure Indicators for Control Systems

Designed to assist personnel operating pneumatic panels with an indication of the presence of control pressures and status in various legs of the pneumatic circuitry. It is intended to be placed in those circuits where there will be an instant indication of loss of pressure.

Shuttle Valves for Control Systems

The shuttle valve utilizes a stainless steel ball sealing against an o-ring. Unpredictable breakaway friction usually associated with sliding seals is eliminated through the use of this "“contact seal" principle. The ball offers "frictionless" response to pressure from either inlet and closes the opposite inlet with a bubble-tight seal.