TPi July 2008

f i t t ings feature on . . .

Fi t t ings

Photo – Saint Gobain Pipelines see page 36

20,000 psi ball and needle instrumentation valves for high-pressure applications

Parker Instrumentation has launched ball and needle instrumentation valves optimised for high-pressure fluid control applications operating at up to 20,000 psi/1379 bar. Available configured with Parker’s high- pressure Phastite ® tube connector ends, the valves offer exceptional integrity to meet the higher pressure hydraulic control and other demanding instrumentation applications that are increasingly being faced in the offshore oil and gas sector. The new ball and needle valves – 20K Hi-Pro Ball Valve and 20K H-Series Needle Valve – are fabricated from 316 stainless steel as standard, and offered in NACE (corrosion) compliant and HCT (heat code traceable) versions. Available with 1 / 4 ", 3 / 8 " or 9 / 16 ", or 6, 8, 10 and 12mm tube connections, the valves’ 6mm bore sizes provide maximum flow rates (Cv) of 0.66 for the needle version, and 1.56 for the ball valve.

The 20K Hi-Pro Ball Valve uses a novel two-piece construction, reducing potential leak paths. It is fully bidirectional and is actuated by a 90º turn for fast on/off action, with stops for positive user feedback. An integral gland adjuster is secured by means of Parker’s proprietary Tru- Loc ® mechanism. The valve mechanism works on the floating ball principle, and offers 100% bubble tight operation.

Parker Instrumentation’s new ball and needle S S instrumentation valves are optimised for high-pressure fluid control applications

PEEK (polyetherketone) seat material is used to allow operation over a wide temperature range from -20ºC to +200ºC (-4ºF to +392ºF). A novel design of seat allows the 20K Hi-Pro Ball Valve to be manufactured from just two body pieces (the main

body and one insert), rather than a conventional three-piece approach (body and two inserts). This eliminates a potential leak path. The two-piece design simplifies valve installation, as it minimises the risk of damage from over-tightening when

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Tube Products International July 2008

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