Instrumentation and Controls
Linear Piston Actuators
PNL and HYL-Series actuators are designed to operate any linear valve or mechanism, and are available in pneumatic, hydraulic, double-acting and spring-return configurations. Utilizing the same cylinder and piston components from the PN and HY-Series, reliable operation and low cost of ownership are ensured for even the most severe applications.
Valve Positioning Systems
These manifolded and compact hydraulic systems provide precise positioning of choke, control, globe or ball valves; either for continual modulation or stepping functions. Semi-rotary and linear designs are available, both in double-acting and spring-return configurations. All common communication protocols are supported, including; infrared, HART and Foundation Fieldbus.
These systems provide on/off or positional control of linear and rotary valves. Completely self-contained, these systems give operators the low installation costs offered by electric actuator systems, but with the power and fail-safe capabilities which have traditionally only been available from pneumatic or hydraulic systems.
As oil and gas resources become harder to find, producers are forced to operate in environments of ever increasing severity and risk. A HIPPS is an independently instrumented protective device which acts as the last line of defence for protecting downstream operations from over pressurization. Typically certified to SIL 3, our turn-key HIPPS packages give producers the most dependable pressure protection devices available in the market today.
Hydraulic Power Units
Provide motive power and control logic to operate either single or multiple hydraulic rotary and linear valve actuator systems. Full PLC control available with all common communication protocols supported.
Gas-over-Oil & Direct Gas Systems
Typically used for on/off valve control in gas pipelines, these systems use the pressure in the pipelines to provide the motive power for the actuators. Suitable for operation of rotary or linear valves, they are available in either double-acting or spring-return configurations. A fully manifolded control system ensures reliable operation and the modular design permits quick and inexpensive field modifications to the control system logic.
These hydraulic systems are suitable for operation of either rotary or linear subsea valves and are available in either double-acting or spring-return configurations. Supporting ROV and diver override operation, non-pressure compensated designs are available for operating depths to 200m and pressure compensated designs for operation down to 2,000m.
Autonomous Shutdown Valves (ASV)
Designed primarily for operation of subsea PLEM valves used in CALM Buoy and similar tanker loading and offloading terminals, the ASV can also be employed in any land based or subsea applications where external power is limited or even unavailable. These systems offer operators increased environmental protection with lower OPEX than traditional technologies.