Overview
Product Features
Operator – The needle valves can be supplied with a number of different operators, including Tee Bars and Cross Bars for diver operation. We also provide different shaped adaptors for direct ROV intervention or adapters for connection to extension rods for remote ROV operation.
Operating Threads – High precision manufacturing processes ensures a trouble free operation. The range of subsea needle valves includes both low torque multi-turn designs and medium and high torque designs for partial turn (270 degree operation) operation.
Anti-Blowout Spindle – Each size of needle valve has a spindle designed for maximum torsional (Torque to Damage) strength and has a backseat to providing an anti-blowout safety feature.
Environmental Seals – All needle valves have seals to prevent the ingress of seawater. These have been tested to water depths equivalent to 10,000 feet (3050m).
Gland Seals – The gland seal within each needle valve has been designed with a spring energised, lower seal to prove the dynamic adjustment of the packing gland seal in response to pressure changes. This feature ensures leak-free spindle sealing with no requirement for adjustment.
Non-Rotating Tip – Each needle valve design has a non-rotating, self-centring, anti-galling spindle tip, which gives a positive bubble-tight shut-off.
Seal Housing or Bonnet – The range of subsea needle valves contains a seal housing that is either threaded or bolted design. In the case of the threaded seal housing designs, these are provided with locking rings, which eliminate the unauthorised removal of the bonnet assembly.
Traceability of Materials – All the components within an Oliver subsea needle valve have material traceability. The needle valve body, tip, spindle, seal housing are manufactured as standard to API 6A PSL3. The complete needle valves are individually serialised and are provided with material and pressure test certificates to BS EN 10204 3.1 certifications. Optional EN 10204 with the intent of a 3.2 type certification option is also readily available (EN 10204 3.2 true mill witnessed shall be assessed for availability upon request).
