HYD-RTX85 Hydraulic Motor Pump | RTX85 Series
- HYD-RTX85 is a compact, belt-free hydraulic drive package that couples a low-speed/high-torque
hydraulic motor directly to an Annovi Reverberi RTX85 triplex plunger pump on a shared, rigid
mounting plane. - Manufactured in Modena, Italy by Annovi Reverberi—industry leader in high-pressure pump
quality since 1958. - Delivers approximately 85 L/min (≈22.5 GPM) at up to 300 bar (≈4350 PSI) near
1450 RPM, providing robust cleaning power for large tools, multi-gun setups, and process
rinse circuits. - Direct-coupled geometry holds shaft centerlines true to minimize side loading on bearings and seal packs for
smoother running, less vibration, and longer life compared with belt drives. - Installer-friendly layout with clear access to coupling, oil sight glass, and vented dipstick so one
technician can handle routine checks, oil changes, and torque verification quickly.
Hydraulic Motor & Circuit
- Uses a displacement-matched LSHT (gerotor/geroler-type) hydraulic motor—manufacturer may
vary—sized to reach the RTX85’s target RPM and torque at pressure. - Integrates into mobile or plant circuits via pressure and return ports typically
SAE-12 (3/4″ ORB), plus an auxiliary case-drain port commonly
SAE-8 (1/2″ ORB) when required by the motor build. - Observe A/B port orientation for correct rotation; route the case drain above reservoir oil level to prevent
aeration. - Size hoses generously and respect bend radii to avoid restriction, pressure drop, and heat build-up.
- Protect the hydraulic circuit with upstream relief valves appropriate for 300-bar service.
- Provide return filtration in the 10–25 μm range with an adequate β-rating, and size the
reservoir for heat rejection (rule of thumb: 2–3× total system flow). - Add an oil cooler for hot climates, prolonged bypass, or continuous-duty operation.
Pump Ports & Water-Side Plumbing
-
HYD-RTX85 manifolds are easy to connect, with typical ports of a
1-1/4″ female BSPP inlet and a 1/2″ female BSPP discharge; adapters
to NPT are readily available. - Keep the suction run short, straight, and oversize to preserve volumetric efficiency and prevent cavitation.
- Use a coarse inlet strainer and anti-collapse suction hose for reliable inlet conditions.
- Install a correctly sized unloader matched to RTX duty class to maintain working pressure
while safely bypassing flow. - Add a high-pressure relief valve and a glycerin-filled gauge for
commissioning and diagnostics. - Include a thermal relief valve on the bypass loop to protect seals during extended
gun-closed operation. - Base geometry anticipates real plumbing with short direct suction, tidy pressure and bypass routing, and
perimeter room for an unloader block without tight bends.
Integration Checklist
- Select nozzle orifices for the chosen working point (≈22.5 GPM at up to 300 bar) and never overspeed the
pump. - Match hydraulic motor displacement and available flow to achieve target pump RPM at the required pressure.
- Verify upstream relief settings, return filtration spec, reservoir volume, and cooling capacity against
the expected duty cycle. - Provide a case drain if specified by the motor manufacturer and route it above tank oil level.
- Maintain inlet screening and check suction plumbing any time performance fades before opening the pump.
- Schedule periodic torque checks on head HYD-RTX85 , manifold, base, and coupling fasteners to preserve alignment.
HYD-RTX85 Typical Applications
- Tug-boat and dock washdown and marina/aquaculture sanitation.
- Municipal fleet and sanitation trucks, public-works rigs, and support for jetter/vac systems.
- Work-truck skids and enclosed van bodies for mobile wash contractors.
- Food & beverage sanitation lines and packaging rooms (observe local hygienic standards).
- Agriculture and ranch equipment wash and fertilizer/barn cleanup.
- Heavy-equipment yards, rental fleets, and equipment-yard rinse stations.
- Conveyor and parts-cleaning cells and general plant maintenance carts.
- Contractor rigs that already carry hydraulic power and need high-duty washdown.
HYD-RTX85 Hydraulic Motor Pump | RTX85 Series
Ownership, Warranty & Key Details
- Manufacturer & origin: Annovi Reverberi, Modena, Italy—industry leader in high-pressure
pumps since 1958. - Performance: ≈85 L/min (≈22.5 GPM) @ up to 300 bar (≈4350 PSI) near 1450 RPM.
- Hydraulic motor: LSHT style, brand varies; hydraulic ports typically SAE-12 pressure/return
with SAE-8 case drain (verify on selected motor build). - Pump ports: typically 1-1/4″ F-BSPP inlet and 1/2″ F-BSPP outlet; adapt to NPT as
needed. - Included: HYD-RTX85 factory oil fill, easy-view sight glass, and vented dipstick for proper fill and
breathing under thermal expansion. - Warranty: 5-year limited, conditional warranty—proper installation (hydraulic and water),
filtration, lubrication, and operation within published limits required; seals and valves are consumable
wear items. - Benefits: compact direct drive, smooth torque, no belt dust, predictable hose routing, and
fast single-tech service across fleets and OEM builds.





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