BY Controls Inc marine valves and hydraulic systems

BY Controls Inc marine flow control and automation: DG and DP globe control valves, DC cryogenic LNG valves, VRCS remote networks, and ER actuators.

BY Controls DG Series heavy duty balanced plug control valves

BY Controls DG Series single seated control valves are engineered for accurate modulation of fluid temperature, pressure, and liquid level. The balanced plug geometry enables smooth throttling performance under severe process conditions characterized by large differential pressures.

Cage guided throttling trim design provides steady plug alignment at high flow velocity
Balanced plug geometry substantially reduces required actuator operating thrust effort
Standardized bonnet mounting interface facilitates quick coupling with pneumatic actuators
Engineered low-noise perforated trims effectively suppress acoustic cavitation sound

BY Controls DP Series compact cage retained seat control valves

BY Controls DP Series globe control valves are engineered for accurate modulation across small and moderate fluid throughput loops. The threadless cage retained seat architecture permits swift internal trim servicing and seat replacement without requiring dedicated shop tooling.

Threadless cage retained seat assembly accelerates routine valve trim inspection tasks
Lock nut bonnet connection allows 360 degree rotational orientation of linear actuators
Versatile flow characteristics available via interchangeable contoured valve plug trims
Self-adjusting PTFE chevron stem packings prevent fugitive gland leakage during cycling

BY Controls TG Series 3-way mixing and diverting control valves

BY Controls TG Series three-way globe control valves are engineered for thermal regulation of marine engine cooling water and fuel switching manifolds. Top-entry trim accessibility permits prompt inspection and maintenance of internal components without cutting pipe runs from the ship.

Versatile 3-way body geometry accommodates fluid mixing and diverting operational regimes
Top-entry trim extraction permits complete internal access without unbolting piping flanges
Spring-loaded PTFE stem packings eliminate manual gland adjustments in marine engine rooms
Cage guided trim design enhances dynamic plug stability under pulsating marine flow regimes

BY Controls DC Series cryogenic globe control valves for LNG

BY Controls DC Series cryogenic control valves are engineered to regulate the flow rate of cryogenic liquefied natural gas, liquid oxygen, and nitrogen down to -196 deg C. Extended bonnets and laminated graphite packings isolate gland seals from deep freezing to protect actuation components.

Extended bonnet column positions stem seals away from ultra-low cryogenic cold zones
Austenitic stainless alloy bodies fabricated from ASTM A351 CF8M and low-carbon CF3M
Precision throttling curves prevent rapid vaporization flashes across cryogenic cargo lines
Wide pressure ratings covering ASME 125 to 2500 with bore sizes spanning 25A to 400A

BY Controls VRCS hydraulic valve remote control systems

BY Controls VRCS hydraulic valve remote control systems provide centralized remote operation of butterfly valves, ball valves, and marine piping valves aboard vessels. The integrated system unites hydraulic power units, solenoid valve cabinets, and electronic mimic control consoles.

Compact hydraulic power units featuring redundant motor-pump sets for marine duty
Solenoid valve distribution cabinets equipped with local manual override levers
Hydraulic rotary actuators available in double-acting and spring-return configurations
Networked mimic consoles with digital bus links to central vessel automation systems

BY Controls ER Series electro-hydraulic rack and pinion actuators

BY Controls ER Series electro-hydraulic actuators combine a built-in local hydraulic power unit with rack and pinion motion transmission. The modular self-contained architecture eliminates external high-pressure fluid piping, ensuring quiet operation and simplified onboard installation.

Integrated local hydraulic power unit eliminates external hydraulic deck plumbing
Precision rack and pinion gear mechanism delivers steady torque with minimal backlash
Energy efficient operation activating the micro-pump only during active valve movement
Rugged enclosure ingress rating IP68 tailored for damp pump rooms and submerged holds

Hydrodynamic parameters and pressure-balanced trim of DG Series control valves

BY Controls DG Series single-seated globe control valves are engineered for severe operational regimes across marine propulsion plants and onshore industrial fluid facilities. The defining structural advantage is the cage-guided balanced plug assembly.

Internal balancing ports drilled through the plug body equalize dynamic fluid pressures acting above and below the throttle plug, substantially diminishing the required actuator thrust effort and enabling compact pneumatic multi-spring diaphragm actuators.

Precision perforated trim cages partition high-velocity fluid streams, mitigating cavitation erosion risks and lowering operational hydrodynamic noise.

Threadless cage retained seat architecture and rapid servicing of DP Series valves

BY Controls DP Series globe control valves provide precision flow regulation across moderate fluid throughput piping loops. The internal trim architecture incorporates a threadless cage-retained seat clamped directly by the heavy bonnet assembly.

This approach eliminates seized internal threads caused by corrosive process fluids and enables technicians to overhaul worn seating surfaces without proprietary shop tools.

The bonnet couples to the actuator frame via a heavy lock nut connection, permitting seamless 360-degree rotational orientation during cramped marine machinery room installation.

TG Series three-way temperature regulation valves in diesel cooling manifolds

BY Controls TG Series three-way globe valves serve as mixing and diverting assemblies across marine engine cooling water systems and heavy fuel oil preparation modules.

The body layout incorporates top-entry trim accessibility, allowing all internal throttle components and guiding bushings to be inspected and withdrawn through the upper bonnet opening without unbolting piping flanges from shipbulkheads.

Spring-energized PTFE chevron stem packings eliminate manual gland adjustments during extended sea voyages, while the elongated cage guide maintains plug stability against heavy marine hull vibrations.

Metallurgical integrity and deep cryogenic capabilities of DC Series LNG valves

BY Controls DC Series cryogenic control valves are engineered for handling cryogenic liquefied natural gas, liquid ethylene, and liquid nitrogen at operating temperatures down to minus 196 degrees Celsius.

Valve bodies are manufactured from austenitic stainless alloy ASTM A351 CF8M or low-carbon CF3M, maintaining impact fracture toughness under deep freezing.

Extended bonnet columns position laminated flexible graphite stem seals away from ultra-low fluid temperatures, guaranteeing free stem travel without freeze-up. Contoured throttling trims prevent fluid vaporization and harmful pressure spikes.

Architectural layout and operational capabilities of marine VRCS hydraulic networks

BY Controls VRCS hydraulic valve remote control systems provide centralized operation of ballast, bilge, and cargo liquid piping networks across modern marine vessels and offshore platforms.

The system incorporates redundant hydraulic power units equipped with accumulator banks, solenoid valve distribution cabinets with manual emergency levers, and electronic bridge mimic consoles.

Heavy rack-and-pinion hydraulic actuators deliver constant symmetric torque throughout the quarter-turn rotation. The automated platform provides real-time position monitoring and reports diagnostic metrics to the vessel automation.

Self-contained ER Series electro-hydraulic actuators with built-in LHPU power units

BY Controls ER Series electro-hydraulic actuators represent self-contained motion modules integrating a built-in Local Hydraulic Power Unit with rack-and-pinion gearing.

This arrangement combines a miniature motor, reversible gear pump, fluid reservoir, and actuator cylinder within a single rugged enclosure rated IP68 for flooded pump room duties.

Eliminating external high-pressure hydraulic pipe runs removes fluid leakage hazards on ship decks and streamlines shipyard installation. The intelligent actuator powers the micro-pump only during motion cycles, minimizing power draw and operating quietly.

BY Controls Inc and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of BY Controls Inc and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.