STPA-SS55G70N | 5.5 GPM 7000 PSI Pump 1750 RPM SS Head 24mm Shaft

STPA-SS55G70N

• STPA-SS55G70N is a powerhouse industrial triplex plunger pump built for extreme-duty cleaning and
  surface preparation.
• Delivers 5.5 GPM at 7,000 PSI while running at 1450 RPM for ultra-high-pressure
  performance with reduced wear.
• Features an AISI 420 stainless steel head, 24 mm solid shaft, and
  oversized tapered roller bearings for maximum durability in harsh environments.
• Ideal for paint stripping, concrete preparation, sanitation systems, and demanding industrial cleaning
  applications.

Key Specifications

• Model: STPA-SS55G70N
• Flow Rate: 5.5 GPM
• Maximum Pressure: 7,000 PSI
• Operating Speed: 1450 RPM (low-speed, high-torque operation)
• Shaft: 24 mm solid shaft for secure, reliable drive coupling
• Pump Head: AISI 420 stainless steel, corrosion- and chemical-resistant
• Design: Industrial triplex plunger pump with ceramic plungers and oversized bearings

What’s Included

• STPA-SS55G70N pump – factory-assembled, fully tested, and ready for installation.
• Factory break-in oil prefilled in the crankcase for immediate startup.
• Oil sight glass for quick, visual monitoring of crankcase oil level.
• Vented dipstick for crankcase ventilation and easy oil checks.
• User manual and schematic documentation for installation and service reference.
• Performance test data sheet verifying flow and pressure output at the factory.
• 5-year limited commercial warranty with U.S.-based service support.

How STPA-SS55G70N Pump Works

• Utilizes a triplex plunger design with three hardened ceramic plungers to create smooth,
  high-pressure flow.
• Plungers draw water through precision suction valves and compress it against reinforced
  discharge valves to produce a stable 7,000 PSI stream.
• 1450 RPM low-speed operation reduces vibration, heat generation, and internal wear versus
  high-RPM pumps.
• Oversized tapered roller bearings distribute loads evenly under continuous duty, preventing
  premature failure.
• Advanced seal design and stainless head geometry maintain pressure integrity in extreme industrial conditions.

Durability & Materials

• AISI 420 stainless steel head provides maximum resistance to corrosion, chemicals, and scaling –
  ideal for sanitation, marine, and harsh industrial environments.
• Ceramic plungers deliver excellent abrasion resistance and thermal stability for long service
  life.
• Oversized tapered roller bearings are engineered to handle sustained high-pressure loads without
  deformation or early wear.
• High-temperature seals resist deformation and maintain sealing integrity under constant high
  pressure and temperature cycling.
• Heavy-duty internal components are designed to endure continuous, high-pressure operation in demanding plants and
  field rigs.

Benefits of the STPA-SS55G70N

• Ultra-high pressure output: 7,000 PSI at 5.5 GPM for the most demanding industrial cleaning and
  surface prep tasks.
• Heavy-duty construction: stainless head, ceramic plungers, and reinforced internals for maximum
  durability and uptime.
• Reliable daily operation: low-speed, high-torque design supports continuous-duty use for
  contractors, manufacturers, and facilities.
• Flexible integration: suitable for mobile rigs, permanent wash bays, and custom-engineered
  systems.
• Operational confidence: backed by a 5-year commercial warranty and U.S.-based service support.

Typical Applications

• Paint stripping & surface preparation: removes coatings and prepares metal, concrete, and
  industrial surfaces.
• Hydro demolition & restoration: supports controlled material removal for construction repair
  and renovation.
• Shipyards & marine: stainless design suited for saltwater exposure and large-surface hull and
  deck cleaning.
• Oil refineries & power plants: cuts grease, scale, and chemical deposits in critical process
  and maintenance cleaning.
• Bridge & infrastructure maintenance: used for surface prep and cleaning in public works and
  civil projects.
• Food & sanitation facilities: stainless steel head supports sanitary protocols and
  USDA-compliant environments when paired with proper procedures.
• Fire department decontamination: reliable platform for gear, equipment, and apparatus cleaning.

Why Choose the STPA-SS55G70N?

• Part of the STPA Stainless Steel Series, purpose-built for high-PSI, high-chemical, and
  heavy-duty environments.
• Low-speed 1450 RPM design, stainless components, and oversized bearings dramatically extend
  service life versus consumer-grade alternatives.
• Factory-tested for verified flow and pressure performance, ensuring consistent results out of the box.
• Provides excellent return on investment for operators who demand uptime, reliability, and stable
  high-pressure output.

Summary of STPA-SS55G70N Features

• Performance: 5.5 GPM @ 7,000 PSI
• Speed: 1450 RPM smooth-running operation
• Shaft: 24 mm solid shaft for secure mounting
• Head Material: AISI 420 stainless steel
• Bearings: oversized tapered roller bearings
• Plungers & Seals: ceramic plungers with high-temperature seals
• Factory Setup: prefilled with break-in oil; performance-tested with schematics included
• Warranty: 5-year limited commercial warranty with U.S.-based support
• Core Applications: paint stripping, hydro demolition, shipyards, refineries, food processing,
  sanitation, and decontamination systems.