STP-SS2250N | 5.8 GPM 7250 PSI Pump 1450 RPM Stainless Head 24mm Shaft

STP-SS2250N Stainless Steel Triplex Plunger Pump

The STP-SS2250N is a stainless steel, high-pressure triplex plunger pump built for
continuous-duty service in harsh industrial environments. Delivering
5.8 GPM at 5000 PSI while running at a controlled
1450 RPM, it provides concentrated cleaning power for systems where
uptime, corrosion resistance, and repeatable performance are critical. With an
AISI 420 stainless steel head, ceramic plungers, and a 24mm solid keyed shaft,
this pump is well suited for washdown lines, fixed wash bays, and engineered skids
operating in demanding facilities.

• 5.8 GPM flow and 5000 PSI pressure for high-impact cleaning duty.
• Low-speed 1450 RPM operation to reduce heat, noise, and mechanical wear.
• AISI 420 stainless steel head for enhanced corrosion resistance.
• 24mm solid keyed shaft for straightforward belt-drive or direct-drive integration.
• Configured for continuous-duty use in aggressive, high-demand environments.

STP-SS2250N Performance & Duty Point

The duty point of 5.8 GPM at 5000 PSI makes the STP-SS2250N ideal for applications
where concentrated jet energy is needed to remove hardened deposits, coatings,
and heavy contamination without oversizing the overall system. Operating at
1450 RPM, the pump achieves its pressure rating with a slow-speed, high-torque
profile that supports long run times and predictable service intervals.

• Flow Rate: 5.8 GPM for focused cleaning and controlled water usage.
• Maximum Pressure: 5000 PSI for aggressive removal of tough residues.
• Operating Speed: 1450 RPM for smooth, controlled operation.
• Suitable for hot water systems when configured within material and temperature limits.
• Compatible with industrial unloaders, regulators, relief valves, and accessory circuits.

Stainless Steel Pump Head & Wet End

The pump STP-SS2250N is built around an AISI 420 stainless steel head that provides structural
strength while offering significantly improved resistance to corrosion compared to
standard brass or plated heads. This is particularly important in washdown zones
where chemical cleaners, sanitizing solutions, and humid conditions are the norm.
Stainless steel valves and fasteners further support long-term sealing performance
and ease of service in corrosive atmospheres.

• AISI 420 stainless steel head for high mechanical strength and corrosion resistance.
• Stainless steel valves to maintain clean seating surfaces over long service intervals.
• Construction suited to washdown areas, food plants, and chemically active environments.
• Reduced risk of head degradation in comparison to non-stainless designs.
• Hardware layout engineered for direct access during inspection and service.

Materials & Chemical Compatibility

Material selection on the wet end is focused on predictable performance in systems
where water quality and chemistry can vary. The stainless head and valves, along
with carefully matched seals and packings, allow the STP-SS2250N to operate in
washdown and process environments that would accelerate fatigue in lighter-duty
pumps, provided that detergents and chemicals are compatible with stainless steel
and elastomer specifications.

• Stainless steel components resist pitting and surface corrosion in damp areas.
• Ceramic plunger and seal interface chosen for stable operation under high pressure.
• Elastomers selected for use with typical industrial detergents and rinse water.
• Suitable for many sanitation, washdown, and process-cleaning circuits.
• Supports long-term reliability when combined with proper inlet filtration.

Triplex Drive & Internal Components STP-SS2250N

The STP-SS2250N uses a triplex plunger design in which three ceramic plungers
operate in sequence, providing a nearly continuous flow profile at high pressure.
Ceramic plungers resist abrasion and thermal shock, protecting the sealing surface
even under demanding conditions. Internally, a heat-treated crankshaft, oversized
bearings, and a constant-lubrication oil bath work together to maintain alignment,
reduce friction, and extend the operating life of the drive end.

• Triplex plunger drive delivers smooth, low-pulsation high-pressure output.
• Ceramic plungers provide a hard, stable surface for long seal life.
• Heat-treated crankshaft designed for high-torque, slow-speed operation.
• Oversized bearings minimize deflection and support continuous-duty cycles.
• Oil-bath crankcase with sight glass and vented dipstick for reliable lubrication.

STP-SS2250N Maintenance & Serviceability

Routine inspection and service are simplified to keep downtime low and maintenance
teams efficient. The crankcase is equipped with an oil sight glass for fast visual
checks, and a vented dipstick provides both fill access and proper crankcase
ventilation. Valve assemblies and seal kits are accessible using standard tools,
making it practical for in-house technicians to maintain performance without
removing the pump from the system for every service event.

• Pre-filled break-in oil shortens installation and initial start-up time.
• Integrated oil sight glass for quick checks of level and oil condition.
• Vented dipstick to support crankcase pressure control and service access.
• Serviceable valve and seal design for efficient in-house maintenance.
• Factory performance testing to verify pressure and flow prior to shipment.

Typical Industrial Applications

With its stainless steel head, high-pressure rating, and compact duty point, the
STP-SS2250N is suited to industrial and commercial systems where both performance
and material durability are required. It integrates cleanly into fixed wash bays,
central washdown systems, and mobile rigs built for demanding accounts.

• Food and beverage plants and USDA-compliant washdown areas.
• Commercial wash systems and fleet maintenance operations.
• Industrial wash racks for tanks, silos, piping, and process equipment.
• Graffiti removal and surface preparation where high pressure is required.
• HVAC coil cleaning and building maintenance in corrosive environments.
• Municipal and fire station wash bays and high-demand rental equipment fleets.

Why Specify the STP-SS2250N

The STP-SS2250N combines stainless steel construction, high-pressure performance,
and slow-speed operation into a single, industrial-grade package. For OEMs,
integrators, and facility managers, it offers a dependable core component for
systems that must operate in corrosive or sanitation-focused environments without
frequent rebuilds. When paired with appropriate filtration, controls, and safety
devices, this pump provides stable, repeatable output over long service intervals.

• 5.8 GPM at 5000 PSI in a low-speed configuration for extended service life.
• AISI 420 stainless steel head and stainless valves for corrosion-prone areas.
• Ceramic plungers and robust drive components for continuous-duty workloads.
• 24mm solid keyed shaft compatible with common industrial drive arrangements.
• Supported by commercial warranty and service infrastructure for long-term use.