Pumps, valves and hydraulics
Marine pumps for every duty - ballast, cooling, fuel, bilge - and valves from DN15 to DN600, in materials from cast iron to bronze and stainless steel.
We select by duty point, not just by number: capacity, head, medium and connections are enough to propose a pump or valve with the right certificate. Complete pump units with motors are matched together with their electrical gear.
Items in this section
Selected parts from this section. The full catalogue is available with a filter.
Expansion bellows
Expansion bellows for ship piping, absorbing thermal movement and vibration, in a stainless-steel build.
Hydraulic oil filter
Pressure filter for the hydraulic system with a 10-25 µm element and bypass valve, for deck machinery.
Hydraulic hose
High-pressure hose with steel braid, crimped to length with end fittings to drawing or sample.
Hand pump
Hand pump for transferring fuel, oil and water, with check valves, as an emergency or service pump.
Pump coupling
Flexible coupling between motor and pump, with a vibration-damping element, selected by torque and shaft sizes.
Hydraulic motor-pump unit
Complete unit - hydraulic pump driven by a motor, with relief valve and fittings, to mount on deck machinery.
Hydraulic pump
Gear or piston hydraulic pump for power systems, selected by the flow and working pressure of the circuit.
Valve block
Stop-check valve block with a manifold, machined from a single body, for media distribution in the engine room.
Storm valve
Storm valve for deck scuppers, self-closing against boarding water, in a seawater-resistant bronze build.
Safety valve
Spring-loaded safety valve with a set pressure and seal, tested and adjusted, with a setting certificate.
Non-return valve
Lift-type non-return valve preventing backflow, in a bronze or cast-steel body, selected by size and direction.
Progressive cavity stator
Progressive cavity pump stator with rubber vulcanised into the shell, matched to the rotor and media viscosity.
Pump shaft
Centrifugal pump shaft in stainless steel, journals reground for the seal and bearings, ready to fit.
Pump spare parts
Centrifugal pump spares kit - impeller, mechanical seal, wear rings, shaft and sleeves - as an overhaul set.
Mouth / wear ring
Impeller mouth ring, a wear part limiting internal leakage, sized to the assembly clearance.
Mechanical seal
Shaft mechanical seal with a carbide-ceramic face pair, for seawater, cooling and ballast pumps.
Pump impeller
Cast bronze centrifugal pump impeller, dynamically balanced, selected by outside diameter and vane count.
Gear pump
Gear pump for lube oil and fuel, self-priming, with a relief valve and steady flow against varying pressure.
Fresh water pump
Centrifugal fresh-water cooling pump, complete with seal and fittings, selected by capacity and head.
Pump cover
Pump casing cover with the seal housing and wear ring, a machined casting for a specific pump type.
Case wear ring
Case wear ring running against the impeller, a service part that restores clearance and pump efficiency.
Ballast eductor
Jet eductor for stripping ballast tanks and bilges, with no moving parts, driven by a working water jet.
Air compressor
Starting-air compressor, two-stage with intercooling, complete with valves and fittings or as spare parts.
OWS solenoid valve
Bilge oily-water separator solenoid valve controlling discharge and recirculation, to MEPC 15 ppm requirements.
Filter element
Fuel or oil filter element, pleated with a stainless mesh or media, selected by rating and dimensions.
Solenoid valve
Two- or three-way solenoid valve for water, air and fuel, with a marine-rated coil and manual override.
Boiler burner nozzle
Auxiliary boiler burner atomising nozzle, calibrated for flow and spray angle for stable heavy-fuel combustion.
Dosing pump
Diaphragm dosing pump for water-treatment and sewage-plant chemicals, with adjustable output and chemical-resistant valves.
Heater
Fuel or water heater with a heating element and thermostat, marine-rated, selected by power and medium.
Plate heat exchanger
Plate heat exchanger with pressed plates and gaskets, for cooling fresh water and oil with seawater.
BWTS strainer screen
Replacement pre-filter screen for the ballast water treatment system, stainless steel, to the system maker rating.
BWTS check valve kit
Service kit for the BWTS check valve - disc, seat and seals - for the system periodic overhaul.
Gasket
Flange or cover gasket cut to size from asbestos-free material, selected by size, pressure and medium.
FWG evaporator plate
Titanium evaporator plate for the fresh water generator, seawater-resistant, matched to the unit type and size.
FWG evaporator tube
Fresh water generator exchanger tube in CuNi or titanium, for the evaporation and condensing sections.
FWG pump motor
Drive motor for the fresh water generator ejector pump, marine IP56, selected by power and ship voltage.
FWG gasket set
Fresh water generator gasket set for an overhaul, in a material resistant to seawater and the unit temperature.
FWG filter
Fresh water generator water filter with a replaceable element, protecting the plates and pumps from debris.
FWG ejector nozzle
Fresh water generator water-ejector nozzle creating vacuum in the evaporation chamber, calibrated for flow.
Fuel oil filter
Duplex fuel oil filter with auto or manual changeover, pleated elements and a sludge trap, ahead of the injection pumps.
Strainer / filter
Basket or Y-type strainer for water and oil, with a stainless basket, as a suction or discharge filter.
Backwash filter
Self-cleaning backwash filter for cooling water, with an automatic cleaning cycle and no flow interruption.
Purifier spares
Fuel or oil purifier spares - discs, rings, seals and bearings - matched to the separator type.
Purifier O-ring set
Purifier O-ring and seal set for a periodic overhaul, in a material resistant to fuel and the working temperature.
Purifier EPC-50 control module
EPC-50 purifier control panel module (OP front), the operator interface board, as a spare for a control retrofit.
Purifier operating-water valve block
Purifier operating-water valve block controlling the bowl-opening cycle, complete with solenoids and seals.
JETS vacuum toilet
JETS vacuum system toilet with low water use, complete or as valve and control spare parts.
Flanged ball valve
Full-bore ball valve in cast or stainless steel, for quick shut-off of water, fuel and oil lines.
Wafer butterfly valve
Centric-disc butterfly valve with an EPDM or NBR seat, lever- or gear-operated, for large-diameter water systems.
Gate valve
Wedge gate valve in cast iron or steel, full-bore, for isolating seawater and ballast piping.
Relief valve
Spring-loaded stainless relief valve protecting the system from overpressure, set and sealed.
API-pattern gate valve
API-pattern gate valve for high-pressure service, cast-steel body with flanges, for industrial and offshore use.
Swing check valve
Swing check valve in a WCB cast-steel body, flanged, preventing backflow on high-pressure lines.
Centrifugal pump
Single-stage centrifugal pump for seawater, cooling and general service, selected by capacity and head.
Piston pump
Motor-driven piston pump for oil and fuel transfer at higher pressure, self-priming.
Fuel oil supply pump
Screw or gear fuel supply pump for the main engine and boiler, with a relief valve and heating connection.
Brine pump
Brine pump for the refrigeration and evaporator system, corrosion-resistant, circulating the cooling solution.
Submersible pump
Submersible pump for dewatering holds, bilge wells and tanks, with the motor in a watertight housing.
Fuel and oil purifier
Disc-stack purifier and clarifier separating water and solids from heavy fuel, diesel and lube oil. Complete with drive, feed pump and control, or as an exchange module.
Hydraulic power unit
Skid-mounted hydraulic power unit with reservoir, motor-pump set, valve block and cooler, feeding winches, windlasses, hatch covers and steering. Frame build with full instrumentation.
Marine hydrophore unit
Marine hydrophore set - pressure tank with a pump group, control and fittings, holding pressure in the fresh-water, seawater or sanitary system. Common-frame build, ready to install.
Sperre HL2/140 compressor rings
K4 HV1/85 compression ring for the Sperre HL2/140 starting-air compressor (1,475 rpm, 24.3 kW, 30 bar). The HL2 is a two-cylinder, two-stage, air-cooled compressor, so we match the ring by the Sperre part and order numbers and confirm the stage in the quote.
Typical items
- Centrifugal and screw pumps with spares
- Bilge and ballast pumps
- Globe, check and safety valves DN15-DN600
- Butterfly valves with actuators
- Hydraulic and pneumatic cylinders
- Hydraulic pumps and motors
- High-pressure hoses and fittings
- Mechanical seals and glands
Documents and certificates
Classification society type approvals, 3.1 material certificates, pressure test reports. For marine valves, documents matching the vessel class requirements are the standard.
Availability and lead times
Common valve sizes and seals from stock. Pumps and units from European and Asian makers, typically 7-20 working days.
From the knowledge base
Practical guides related to this category.
- ComplianceBWTS spare parts: why they're locked to the maker and what to stock
- ComplianceEN 10204 3.1 vs 3.2: which material certificate a marine part actually needs
- GuideMarine valve types: gate, globe, butterfly, ball and check, and which to use
- AnalysisMechanical seal or gland packing? Choosing a marine pump seal