New from ASCO Numatics is the 361 series of stainless steel pilot valves which has a design that eliminates ‘sticking’ problems in low cycle demand applications. These problems can occur in valves installed in the pneumatic logic panels used to control safety monitoring systems in offshore oil and gas production facilities.
These have a body in 316L stainless steel and the Elgiloy and stainless steel springs are designed for corrosion resistance and severe service beyond one million cycles.
T-seal technology resists the problem faced by O-rings which can stick upon actuation in low-demand control valve applications, states the company.
The 1/4″, 3-way and 316L stainless steel valves are ATEX and IECEx approved (Ex d) and can be fitted with an explosion proof (low power) operator for use in Zone 1 and 2 hazardous areas. These are offered in manually operated, air piloted, and solenoid piloted versions and can be configured as breathing and non-breathing.
The valve’s balanced design maintains the same flow characteristics when the valve is used in a normally open or normally closed configuration.
In addition, the valve’s innovative pilot-selector design allows the same unit to be used as an internally or externally piloted solenoid valve.