Skip to content
PRICE DEMOLITION SALE: Hundreds of Job-Crushing Deals. Shop Now >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.

Free Gift Card on All Orders Over $100 See Details

Extended - Last Chance!

Free Gift Card Details

$100 Order

$10
gift card

$250 Order

$25
gift card

$500 Order

$50
gift card

$1000 Order

$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 11/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
Print

Hudson Diaphragm Pump Backpack Sprayer — 4-Gallon Capacity, 70 PSI, Model# SP1 97154

Item# 41805
Hudson Diaphragm Pump Backpack Sprayer — 4-Gallon Capacity, 70 PSI, Model# SP1 97154

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Hudson Diaphragm Pump Backpack Sprayer — 4-Gallon Capacity, 70 PSI, Model# SP1 97154

Click or Tap image to Zoom

  • Professional sealed diaphragm pump and Viton seals for durability
  • Translucent 4-gallon tank makes it easy to monitor liquid levels
  • 20in. wand has an adjustable cone-pattern nozzle and includes three plastic flat fan nozzles
  • Locking shut-off valve with in-line filter
  • 47in. industrial spray hose

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Warranty

  • Compare

Product Summary

This 70 PSI Hudson SP1Multi-Purpose Diaphragm Pump Bak-Pak® Sprayer has a professional sealed diaphragm pump and is equipped with Viton® seals for durability. Its translucent 4-gallon tank makes it easy to monitor liquid levels. The 20in. wand has an adjustable cone-pattern nozzle and includes three plastic flat fan nozzles.

What's Included

  • (1) Backpack sprayer
  •  (3) Flat fan nozzles

Downloads

Product Manual

Features + Benefits

  • Professional sealed diaphragm pump and Viton seals for durability
  • Translucent 4-gallon tank makes it easy to monitor liquid levels
  • 20in. wand has an adjustable cone-pattern nozzle and includes three plastic flat fan nozzles
  • Locking shut-off valve with in-line filter
  • 47in. industrial spray hose
  • Solid steel pump handle

Key Specs

AttributeSpecification

item#

41805

Brand

Hudson

Manufacturer's Warranty

1 year Limited Warranty

Ship Weight

12.0 LB

Tank Size

4 Gal

Pressure

70 PSI
AttributeSpecification

Seal Type

Viton

Spray Pattern

Cone, Flat Fan

Wand Length

20 in

Pump Type

Diaphragm

Hose Length

47 in

Dimensions L x W x H (in.)

22.25 x 14.5 x 8.75 in

Reviews

Questions & Answers

3 Reviews This action will navigate to reviews.

Questions

1–4 of 4 Questions  
Sort by:

  1. Safe for Roundup?

    Since this has a brass wand, is it safe for use with Roundup? Which is the best unit for Round up spraying?...SP1 or SP2 ? Thanks.

    1 answer

    1. This Hudson sprayer can be used with Round-up. The SP1 model is superior for use with harsh chemicals such as Round-up since it features a diaphragm style pump.

      Helpful?

  2. What is the difference/advantages of a piston pump versus a diaphram pump

    1 answer

    1. Piston fittings are suitable for many applications, however diaphragm fittings allow the use of abrasive chemistry like Roundup ® that would otherwise damage piston sprayers.

      Helpful?

  3. How far can this spray?

    1 answer

    1. The manufacturer does not list a maximum spray distance.

      Helpful?

  4. What is the warranty?

    1 answer

    1. The Hudson SP1Multi-Purpose Diaphragm Pump Bak-Pak Sprayer has a 1 year limited parts warranty.

      Helpful?

Warranty

Manufacturer's Warranty

1 year Limited Warranty