In the ever increasingly safety conscious world in which we operate, protecting plant integrity and employees is of prior importance. For this reason, Instrumentation Valves are a key component of the modern plant and in a wide range of Oil & Gas applications.
Instrumentation Valves can come in various forms, and are mainly used to isolate delicate pressure instruments whilst essential maintenance is being conducted.
Many forms of instrumentation valves are available, ranging from simple quarter turn ball valves, up to high pressure needle valves and complex manifold solutions that can house many instruments.
In many Oil & Gas applications, Double Isolation is mandatory whilst performing maintenance on the pressure lines. DBB Valves are available in ball valve, or needle valve form and consist of a small bleed valve sandwiched between two isolation valves.
Needle Valves are primarily used to isolate delicate pressure instrumentation in Oil & Gas Applications. They can often cope with high pressures (up to 10,000psi), and are often manufactured from high grade stainless steel or other exotic alloys.
A simple, quarter turn Ball Valve is another method of isolating pressure instrumentation in aggressive environments. Floating ball types are often used, and are more economical than Needle Valves.
Preventing Back Pressure in highly critical Oil & Gas applications is a supremely important task. Instrument Check Valves are often used to perform such duties. They are available in a wide range of materials and are able to perform at high pressures.
As a safety precaution, many process applications require ‘Double Isolation’ to protect employees and plant integrity whilst performing maintenance. Here, Double Block & Bleed valves are used. They consist of two isolation valves, with a bleed or vent valve in the middle to bleed off any excess pressure. This ensures safety whilst maintenance is being conducted on the line.