Skip to main content Skip to search Skip to main navigation

Mesto PRIMER 3237P pressure sprayer FPM seals for construction chemicals 5 l

Description

The Mesto PRIMER 3237P is a hand-operated pressure sprayer for spraying deep primer, bonding primer and other sprayable construction chemicals. According to the manufacturer, the FPM (Viton) seals offer good resistance to many construction chemicals; the maximum operating pressure is 3 bar. The side-carried plastic tank holds 5 litres with a total capacity of 7 litres and is aimed at painters, tilers and plasterers in daily building-site use.

Benefits at a glance

  • Designed for construction chemicals: FPM seals (Viton) instead of standard seals, good resistance to many construction chemicals.
  • Less frequent pumping: 5 litres filling capacity with 7 litres total capacity give a large pressure cushion above the medium.
  • Even spray pattern: special flat-fan nozzle 110-02 with 110 degree spray angle on the 50 cm long, 360 degree rotatable spray lance.
  • Secure stand: foot rest holds the unit to the ground while pumping, the carrying strap makes it side-carried.
  • Fewer blockages: integrated dirt filter at the hose connection, removable for cleaning.
  • Pressure in view: piston pressure gauge shows the pressure, the safety valve releases excess pressure.

Areas of application

  • Applying deep primer and bonding primer to plaster, concrete and plasterboard
  • Sprayable impregnations and primers in interior fit-out
  • Applying wallpaper remover to woodchip wallpaper and old coats
  • Pre-treatment before painting, tiling and plastering work
  • Use on the building site and in the workshop, indoors and outdoors

Limits & notes

According to the manufacturer, the unit must not be used for spraying plant protection products. The maximum operating pressure of 3 bar limits it to thin, sprayable media; filled paints, varnishes and pasty coatings belong in an airless or cup spray gun. FPM is resistant to many, but not all construction chemicals: before using media with a strong acid or solvent content, check the manufacturer's resistance information.

Application & tips

Fill the container only up to the 5 litre mark, close it and build up pressure with the pump; the foot rest holds the unit to the ground while doing so. Test the spray pattern on an inconspicuous area, then work in overlapping passes. The safety valve releases excess pressure automatically. When spraying construction chemicals, the protective instructions in the safety data sheet of the respective medium apply, not those of the unit. After work, release residual pressure, empty the container, flush all parts that carry the medium with water or a suitable cleaner and remove and clean the dirt filter. Store the unit empty and frost-free.

Frequently asked questions

Can I apply plant protection products with the PRIMER 3237P?
No. The manufacturer expressly excludes use for plant protection products; the unit is designed for construction chemicals.

How long is the spray lance and how far does the hose reach?
The plastic spray lance measures 50 cm and is rotatable by 360 degrees, the PVC hose is 1.3 m long.

What do the FPM seals offer compared with a standard pressure sprayer?
FPM (Viton) is resistant to many construction chemicals, whereas standard seals swell or become brittle more quickly there.

How much really fits in?
5 litres filling capacity with 7 litres total capacity. The difference is the pressure cushion, which reduces the number of pump strokes.

Technical data

Area of use: Exterior, Interior
Content: 5 l
Material: Plastic
Technical data
Total contents: 7 l
Max. operating pressure: 3 bar (44 psi, 0.3 MPa)
Container: Plastic, transparent, can be carried at the side
Sealing material: FPM (Viton)
Spray lance: Plastic, 50 cm, rotates through 360 degrees
Nozzle: Flat jet nozzle 110-02, plastic (POM), spray angle 110 degrees
Hose: PVC, 1.3 m, connection D8
Features: Safety valve, piston pressure gauge, integrated dirt filter, foot rest
Product class: Comfort
Use
Field of use: Indoors, outdoors
What's included
Supplied as: Container with pump, hose, spray lance, nozzle, carrying strap and instructions

Manufacturer information

Manufacturer information pursuant to Art. 19 EU GPSR

Postal address MESTO Spritzenfabrik Ernst Stockburger GmbH
Ludwigsburger Str. 71
71691 Freiberg am Neckar
Germany

Electronic address info@mesto.de
Phone: +49 7141 272-0

All products by Mesto

Information as of: 2026-09-24

Reviews

0 of 0 reviews

Average rating of 0 out of 5 stars

All reviews come from buyers. Reviews can only be submitted via the personal, signed link we send to the order's e-mail address after delivery; the link is bound to the order and the purchased item, there is no form without a purchase. We check every review before publication and publish positive and negative reviews alike. Reviews from our former shop baustoffhandel-nrw.de were migrated; there, too, only customers who had bought the item could review it.


For your project

These products go with it

Project: Clean and protect the façade

Remove algae and moss growth, close cracks and cover windows and ground. Treat the mineral, not rain-soaked façade from top to bottom with a siloxane water repellent. If the surface is to be coloured, then paint with siloxane façade paint, with an additive against algae and fungi where algae are a risk.

  1. Prepare the surface

  2. Apply

  3. Tools & accessories

11 items selected