Comet P40 Soft Wash Diaphragm Pump with Gearbox (2025 New Model)

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SKU:
30073-00008.10
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Comet P40 Soft Wash Diaphragm Pump with Gearbox & Regulator – 14.5 GPM, 300 PSI | Summary

The Comet P40 Soft Wash DiaphragmPump (30073-00008.10) is the upgraded, regulator-equipped version of Comet’s popular 3-diaphragm semi-hydraulic pump—purpose-built for high-volume, low-pressure chemical application. Delivering up to 14.5 GPM at 300 PSI, this model includes the GCP 20 regulator, making it a ready-to-mount solution for gas engine soft wash systems using a 3/4" horizontal shaft.

With rugged polypropylene construction, Buna diaphragms, and a factory-installed gearbox, the P40 B GR outperforms older styles (like 6158.0003.00) with improved flow, chemical compatibility, and maintenance access. Whether you’re building a new system or replacing an old P40, this model is the direct upgrade contractors need.

 

  • Factory-Mounted GCP 20 Regulator – Provides precise pressure control for downstream or bypass configurations

  • 3-Diaphragm Semi-Hydraulic Design – Delivers stable, pulsation-free operation for soft wash chemical spraying

  • 14.5 GPM at 300 PSI Output – High-volume performance ideal for roof cleaning, siding, and surface treatments

  • Self-Priming Pump – Can draw from tanks without assistance, reducing setup time and improving reliability

  • Polypropylene Manifolds – Superior chemical resistance against sodium hypochlorite and surfactants

  • Buna Diaphragms – Standard chemical compatibility for soft wash mixes

  • Gearbox for Gas Engines – Direct-mount to 3/4" shaft engines like Honda GX160/GX200 or CRX 212

  • Compact & Serviceable – One-piece molded collector, visible oil cup, and accessible valve assemblies

  • Versatile applications: Ideal for soft wash systems, agricultural spraying, lawn care, and pest control, offering reliable performance across multiple industries.
 Specification  Details
 Brand  Comet
 Part Number  30073-00008.10
 Model  P 40 B GR
 Max GPM  14.5 GPM
 Max PSI  300 PSI
 Max HP  2.3 HP
 Max RPM  550 RPM
 Weight  40 lbs
 Oil Capacity  30.4 fl oz
 Diaphragm Material  Buna
 Construction Material  Polypropylene
 Includes Regulator?  Yes (GCP 20 Regulator)
 Self Priming  Yes
 Inlet  1"
 Outlet  3/4"
 Bypass  1/2"
 Gearbox Shaft  3/4" Horizontal Shaft
 Mounting  Gas Engine Compatible

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