The Parker V4 A-LOK series needle valve has an inline orientation with 1/4in double ferrule tube fitting ends, blunt (hard seat) stem configuration and Teflon stem packing. This valve is designed to provide positive, leak-tight shut-off and coarse regulation of fluids in process and instrumentation applications, providing the user with the utmost flexibility. It is available in five integral bonnet designs with packing above the stem threads.
Stainless steel valves and filters
The Parker Hannifin range of stainless steel instrumentation tubing, tube fittings, valves, regulators and manifolds are manufactured to meet the demand for precision-engineered instrumentation components of high-quality. All the products meet or exceed the relevant worldwide standards.

316 stainless steel and brass construction standard
Inline and angle patterns standard
Maximum working pressure is 345bar (5,000psig)
Operating temperature ranges between -54°C and 232°C