PPS-200 / PROPOSED CONCEPT / REV A

Drop in.
Move the stream.

A forklift- and crane-placeable duplex centrifugal pump skid for plant utility transfer, nonpotable washwater boosting and stationary facility tank-to-tank circulation.

Proposed concept — not yet built · Hydraulic duty, wetted materials and controls require service-specific selection

2 × 200 GPM / STUDY TARGETLead / standby or parallel manifolded duplex concept

120 FT TDH / BASELINE CASE80 ft static + 40 ft friction starting assumption

2 × 15 HP / VFD DUPLEX7.4 kW single-pump · 14.3 kW parallel running study

Proposed AmeriPro modular fleet showing the prefabricated industrial pump skid at lower right — **The pump skid in the modular fleet.** PPS-200 is the lower-right unit: a steel base with forklift pockets and four lifting lugs, duplex centrifugal pumps, flanged manifolds with isolation valves and a local HMI panel.

MANIFOLD ARCHITECTURE / DUPLEX BASELINE

Two pumps. Shared headers.

Each pump branch includes suction and discharge isolation, flexible connectors, strainer/pressure taps and a discharge check valve so either pump can be isolated while the standby unit runs.

LEAD / STANDBY (1 × 100%)

Redundant transfer

One pump delivers the full design flow while the second remains isolated or armed for automatic failover and runtime equalization.

LEAD / LAG (2 × 100%)

Staged capacity

The lag pump starts on high level or low header pressure. Combined flow depends on the shared piping system curve, not simple doubling.

PROTECTION

Dry-run & deadhead

Low suction pressure/level, high discharge pressure, minimum-flow timer and VFD overload trips protect mechanical seals and casings.

Service fluid and wetted-material boundaries

End-suction centrifugal pumps require screened, low-viscosity fluids free of stringy rags or coarse grit. Do not apply PPS-200 to unscreened raw restaurant grease trap pumpings, heavy sludge cakes or uncharacterized hazardous solvents.

Select ductile-iron / bronze-fitted, 316 stainless steel or duplex alloy wetted ends based on chloride level, pH, temperature and cleaning chemistry. Mechanical seal faces and elastomers (e.g., SiC/SiC with FKM or EPDM) must match the specific liquid and temperature envelope.

INTERACTIVE / HYDRAULIC, NPSH & POWER STUDY

Size the duty point.

Evaluate total dynamic head, shaft brake horsepower, electrical kW demand and suction NPSH margin for a clean/screened liquid. All presets are illustrative starting cases.

Hydraulic duty and fluid Operating arrangement Flow per running pump US GPM at active operating point Static elevation + pressure head ft of liquid Piping & manifold friction loss ft of liquid at operating flow Fluid specific gravity relative to water at 60 °F Pump hydraulic efficiency % at selected duty point

Motor, VFD and suction NPSH Motor nameplate per pump HP; check against runout Combined motor + VFD efficiency % Control panel & auxiliary load kW AC Absolute suction supply head ft liquid (e.g. 33.9 ft atm ± static head) Suction line & strainer loss ft of liquid Fluid vapor pressure head ft of liquid at operating temperature Pump required NPSHr ft at operating flow; vendor curve required

HYDRAULIC & POWER OUTPUT

Total skid flow & 8 h shift volume—

Total dynamic head (TDH)—

Shaft power per running pump—

Total electrical input demand—

Suction NPSHa & margin over NPSHr—

Equations and engineering limits

Total dynamic head (TDH) = static head + friction loss. Equivalent differential pressure (psi) = TDH × SG × 0.4335. Water horsepower (WHP) per running pump = (GPM × TDH × SG) / 3,960. Brake horsepower (BHP) = WHP / (pump efficiency / 100). Electrical input per running pump (kW) = BHP × 0.7457 / (drive efficiency / 100).

Available net positive suction head (NPSHa) = absolute suction supply head − suction friction loss − fluid vapor pressure head. The planner checks whether BHP ≤ motor nameplate HP and whether NPSHa ≥ NPSHr + 3.0 ft.

The model uses clean-water affinity/power equations without viscosity correction factors (Hydraulic Institute ANSI/HI 9.6.7) and does not solve pump-curve vs. system-curve intersections automatically. Check end-of-curve runout power and starting inrush kVA with the pump manufacturer.

PACKAGING / SKID ENVELOPE & MASS

Compact base. Rigging ready.

Proposed 8 ft 0 in length × 5 ft 0 in width × 6 ft 2 in height structural steel skid frame. Forklift pockets and corner lifting lugs require structural engineering certification.

PLAN VIEW / CANDIDATE SKID ZONING (8 FT × 5 FT NOMINAL)

2.5 ft / CP-1701 CONTROLS
Duplex VFDs / HMI / disconnect

2.75 ft / P-1701A LEAD BRANCH
Suction strainer / pump / check / isolation

2.75 ft / P-1701B STANDBY BRANCH
Suction strainer / pump / check / isolation

6 IN FLANGED SUCTION (HDR-1701) AND DISCHARGE (HDR-1702) MANIFOLDS SPAN ACROSS PUMP BRANCHES

Initial dry shipping mass allocation: 2,850 lb; wet operating mass with manifold liquid holdup: 3,250 lb against a 4,000 lb structural design target (leaving 750 lb reserve). Lifting lugs, forklift pocket spacing, center of gravity and anchor-bolt reactions require structural verification.

ENGINEERING

Design basis

Equipment tags, manifold layout, mass and power schedules, protective interlocks and validation gates.

Read design notes →

COST STUDY

Preliminary BOM

$62,000 base allowance + 20% contingency = $74,400 concept budget, pending supplier quotes.

Read BOM & exclusions →

FLEET INTERFACE

Power & plant tie-in

At 7.4 kW (single pump) to 14.3 kW (parallel), PPS-200 fits within building 480/230 V feeders or HybridForce-60 real-power targets once voltage and starting kVA are matched.

Review HybridForce-60 →

Technical background: Hydraulic Institute (ANSI/HI) pump standards overview and EPA water reuse engineering references. These support general hydraulic principles.