The Water Hydraulics Co High-Pressure Tap Water Hydraulic Systems

Engineering Architecture and Fluid Dynamics of Janus Axial Piston Pumps

British fluid power specialist The Water Hydraulics Company Limited engineered the Janus axial piston pump range to deliver tap water and seawater under operational pressure up to 160 bar.

Unlike conventional fluid units that rely on mineral lubricant oils, these machines utilize plain water as both the primary power transmitter and thermal coolant. Models across P1, P3, P6, P15, P30, P60, and P180 configurations span displacements from 0.8 to 625 cc/rev.

Each assembly incorporates nine precision plungers to minimize pressure ripples, eliminating the requirement for pulsation accumulators.

Structural housings and internal moving parts are machined from corrosion-proof 316 or duplex stainless alloy, while polymer sliding interfaces prevent mechanical seizure during continuous high-velocity rotation.

Kinematics and Tribological Properties of M Series Oil-Free Fluid Motors

Janus axial piston motors across M3, M6, M15, M30, M60, and M180 series convert hydraulic water power into mechanical torque over displacement volumes from 3 to 225 cc/rev.

The entirely oil-free build eliminates process fluid contamination risks across pharmaceutical cleanrooms, marine desalination skids, and food processing lines.

Hydrostatically balanced slipper pads and advanced polymer sleeve bearings enable steady bi-directional rotation with smooth shaft speed modulation.

Silicon carbide mechanical shaft seals isolate the internal chamber from ambient ingress, while multi-piston kinematics suppress acoustic noise and mechanical vibration during continuous heavy-duty industrial duty cycles.

Hydrodynamic Regulation and Manifold Layout of Janus Control Valves

The Water Hydraulics Co valve range features 4/3, 4/2, and 3/2 directional control spool valves across DN6 and DN9 sizes rated for fluid flows up to 50 l/min, supplemented by heavy-duty DN12 and DN16 relief valves with flow capacity up to 400 l/min.

Proportional flow throttles and electronic pressure regulators interface with digital ST5 motion controllers for closed-loop regulation. Valve spools and matched seating faces are ground from 316 stainless alloy to achieve leak-free shutoff in PO Check load-holding circuits.

Multi-station monoblock stainless manifolds accommodating one to four valve stations eliminate external high-pressure piping joints and suppress potential leakage paths.

Mechanical Integrity and Polymer Sealing in Tie-Bar Stainless Cylinders

Fluid cylinders from The Water Hydraulics Co utilize an external tie-bar layout that yields superior fatigue endurance and resistance against hydraulic shock loads compared with welded alternatives.

All load-bearing components including cylinder caps, barrels, and piston rods are precision-turned from 316 stainless alloy. Standard bore dimensions range from 32 to 125 mm with matched rod diameters from 16 to 60 mm complying with ISO mounting footprints.

Dynamic sliding boundaries feature specialized multi-lip polymer packings that resist cavitation erosion when operating on raw seawater. For harsh installations involving abrasive mineral fines, an optional ceramic rod overlay provides elevated surface hardness.

Modular Powerpack Architecture and Water Conditioning to WRAS 1999 Standards

Packaged Janus pumping stations supply high-pressure tap water up to 160 bar with delivery rates spanning 0.8 to 22.5 l/min. Station reservoirs are fabricated from 316 stainless alloy or non-reactive engineering polymers in full compliance with British WRAS 1999 potable water regulations.

The modular packaging integrates close-coupled electric drive flanges with elastomeric couplings, multi-stage cartridge filtration down to 5–10 microns, stainless plate heat exchangers, and dry-run safety sensors.

These power units serve critical duty cycles across high-pressure water mist firefighting installations, reverse osmosis desalination skids, and hygienic industrial spray washdown loops.

System Commissioning, Maintenance Protocols and Field Diagnostics

Routine maintenance procedures for The Water Hydraulics Co fluid systems center on preventative fluid quality management, volumetric efficiency verification, and seal integrity assessment.

Field engineers record nameplate metadata, inspect plunger clearances, evaluate pump volumetric delivery against rated curves, and calibrate relief valve cracking thresholds.

Replacement rebuild kits including mechanical face seals, sliding bearings, and precision valve plates restore design performance without requiring full unit replacement. Pressure proof testing up to nominal design limits ensures dependable ongoing plant operation.