N-Line Valves is a technological leader and world-class manufacturer of chokes, severe service valves and engineered special application valves.
By combining original thought, state of the art design and engineering packages together with extensive ﬁeld experience, NLine Valves provide solutions for in the most severe ﬂow control applications. 3-D modelling and computational ﬂuid dynamics assure valve performance throughout its life.
HTS Steam and High Temperature Control Choke
Type HTS Sleeve and Cage
The High Temperature Closed Cage and Sleeve Assembly uses a metal to metal design to assure shut off. In the full closed position, the sleeve makes contact with the Cage Assembly in an area of low velocity making extended life of the positive seal an inherent design feature. The positive seal is bidirectional by design and will allow for reverse ﬂow in "huff and puff" applications allowing steam injection and production in the same choke. This design is for the most severe service that may entail very high pressure drops, cavitation and entrained solids such as formation sands. This trim is available in different materials with Equal Percentage or Linear Characteristic and is available with all forms of actuators. 2" and 2.5" body sizes and all pressure class and size end connections are available.
Type HSC Sleeve and Cage
The Closed Cage and Sleeve Assembly uses a metal to metal design to assure positive shut off. In the full closed position, the sleeve makes contact with the Cage Assembly Carrier in an area of low velocity making extended life of the positive seal an inherent design feature. The positive seal is bi-directional by design. This proven design is for the most severe service that may include very high pressure drops, cavitation and entrained solids such as formation sands or pro-pants. This trim is furnished in Tungsten
Pneumatic Valve Actuator
Pneumatic Piston Actuator
The N-Line Valves model P Actuator is a pneumatically powered (Produced Gas or Instrument Air) linear output actuator. The actuator is offered in 3 primary models of Fail Open, Fail Close and Fail Last Position, with optional side mount manual override. Standard all steel construction with optional stainless steel construction makes this an ideal actuation for heavy salt spray offshore environments.
Adjustable travel stops are available to limit travel. Actuators are available with a full range of accessories and controllers/positioners. Options also include Gages, Filter Regulators, Solenoid valves and bypass systems. Units can be custom tailored to speciﬁc applications on request.