Characteristics and features of guns for the Hilti polyurethane foam

Foam gun - assistant professional builder and an indispensable tool for a beginner. Regular foam with a nozzle will not allow to fill difficult spaces, is sprayed from improper pressing or use, and a layman can completely ruin the surface. Foam is a heat insulation material, an adhesive, and a sealing agent.

Special features

The gun can help in the following situations:

  • when extruding the required amount of foam, which contributes to the application of an error-free portion of the substance;
  • in saving material consumption: thanks to the gun, it will require 3 times less foam than with a normal nozzle on the cylinder;
  • in adjusting the flow of material, depending on the size of the cavity to be filled;
  • in adjusting the required foam consumption: after releasing the lever, the supply of foam stops, while the excess does not remain;
  • in preservation of the remained material: after the termination of works the foamy substance in the gun does not stiffen;
  • in maneuvers when working at height: the tool can be used with one hand, which is very convenient if the builder is on a stool, stepladder or holding something in the other hand.

It is worth noting that during operation the tool may fall. But thanks to the metal base of the gun, the foam container will not break. Additionally, it should be noted that an ordinary balloon freezes in the open air, unlike a pistol.

Device

Thanks to the valve and the adjusting screw, as much foam as is required emerges from the bottle.

Below is the composition of the gun:

  • cylinder adapter;
  • handle and trigger;
  • trunk tubular bore;
  • fitting with valve;
  • adjusting screw.

The device consists of three parts: a handle, a feed mechanism and a lock cartridge.

According to its frame, the gun can be collapsible and monolithic. On the one hand, the monolithic construction seems more reliable, on the other hand, the collapsible model is easier to clean,and with minor breakdowns - to repair. Which one to choose depends already on the builder and on the adjacent characteristics of the device.

It is necessary to consider models with either a built-in ergonomic handle, or with an overlay to it in the kit. We have to work with professional models for a long time, therefore it is important here that the hand does not get tired.

Metal, as you know, is easier to clean from contamination, so the metal spout is easily cleaned with a regular construction knife.

Manufacturer Overview

International holding Hilti exists since 1941, it has many branches, as well as a representative office in Russia. It produces tools, materials and high-quality accessories, in the price category above average, the products are intended mainly for professional audiences.

The company mainly specializes in perforators and drills, and also produces high-quality guns for mounting.

The gun for foam should be made of quality materials. If the gun is made of metal, and its country of origin is China - this is not the best option.

The manufacturer from Liechtenstein Hilti produces tools from high-quality plastics,which will be several times more durable than metal counterpart. Plastic is much easier, and it is quite comfortable to hold such a gun in one hand. Also, the tool from Hilti has an anti-slip handle, an enlarged lever of pressing, which allows you to work comfortably in gloves, has a fuse to prevent spontaneous leakage of foam. Hilti belongs to the category of professional pistols, so the barrel of this tool is covered with Teflon.

You should not save on such an element as a foam gun - you can buy it once, and it will last for a long time.

Most often, when it comes to the company "Hilty", they mean both foam and gun manufacturer. Hilti CF DS-1 is a fairly popular model among professionals. The tool adapter is suitable for all cylinders, even other manufacturers.

Professionals, of course, advise to work with the assortment of one manufacturer: and a gun, and a cleaner, and foam, but with the purchase of third-party cylinders Hilti CF DS-1 will not deteriorate. Sizes of the gun: 34,3x4,9x17,5 cm. The weight of the tool is 482 grams. Included is a box and a passport for the product with instructions for use and a guarantee of operation.

This model has a thin nose, which allows you to work even with the most hard-to-reach places.The unit has an adjustment that allows you to control the strength of the shot foam. Suitable for fire fighting foam.

The body, made of high quality reinforced plastic, does not disassemble, the barrel is covered with Teflon. Teflon also covered the installation site of the cylinder. It is necessary to clean only the barrel of the gun with a special nozzle. It has an ergonomic handle that facilitates the work of the master. The only caveat is that the gun has a monolithic body, so it will not work out.

The device "Hilty" is used for one-component polyurethane foam, used for jambs, windows, doorways and other elements. Suitable for metal, plastic and wood surfaces. It helps with insulation and thermal insulation works.

It is believed that "Hilti" - the best tool of all guns for foam. The average price is 3500 rubles for the CF DS-1 model. The warranty on such a tool is 2 years.

Advantages of Hilti CF DS-1:

  • fairly light weight;
  • blocking from involuntary pressing;
  • comfortable and large grip;
  • thin nose;
  • the ability to work in the lateral position (no "sniffing");
  • does not pass foam when falling or deformation;
  • long operation (till 7 years).

Disadvantages of Hilti CF DS-1:

  • does not have the ability to parse;
  • large;
  • has a high cost compared to similar models.

Reviews

Despite the high cost, all users who worked with this tool speak well of it and recommend it to colleagues and friends. Consumers note the convenience of the handle and the low weight of the unit. Ease of cleaning is also noted due to the lack of a nut on the nose of the barrel and convenient storage - foam does not dry out, even if the cylinder is screwed into the gun, and it is not used for a long time.

All available reviews on the official website speak about the superiority of the Hilty pistol over analogues. Some consumers used the tool for more than 4 years and did not experience any difficulties at work.

Among the shortcomings, users emit only the absence of a collapsible design and a high price, if you choose it for domestic use.

When buying, it is important to check whether the gun holds pressure - for this it is necessary to ask the seller to drive a cleaner through it. Every self-respecting store, which is sure that it does not sell a low-quality fake, should check the unit.

Using

Professionals recommend to moisten the surface with a sprayer half an hour before applying the foam before starting work. This is necessary in order to improve the polymerization. The temperature of the surface and air should be above 7-10 degrees Celsius, the humidity of the room - more than 70%.

If a person first uses a dosing device for foam, it is better to slowly try to press the shutter button, and only after he understands how to adjust the pressing force, you should proceed to the application.

Be sure to shake the vial of foam before use. After that, you need to carefully screw it into the adapter.

Foam tends to swell, so it should be applied carefully, occupying less than 50% of the volume of the cavity. You need to know that the gun "Hilti" is specially created for accurate work - you need to properly use a thin nose.

Due to the ease of pressing the trigger should not have problems with the same uniform filling.

If for any reason there is an “etching” of the foam through the spout, the rear handle should be tightened and the problem should be eliminated. It is still possible to “etch” foam from under the attachment ball to the adapter.To solve this problem when replacing a cylinder, you just need to “loosen” all the foam, clean the barrel and install a new cylinder.

It must be remembered that complex areas are foamed first. Then you need to move from top to bottom or left to right. Hilti CF DS-1 can be rotated and it is not necessary to keep it strictly vertically - this will facilitate the filling of difficult sections and corners.

Cleaning

          Manufacturers recommend to purchase cleaning cylinders of the same company as the foam itself, since their compositions are already pre-selected for each other. A cleaning cylinder is needed to clean the device from the inside to dissolve the frozen mass, which may impede the further passage of the foam. The cleaner required for this “Hilty” model is CFR 1 of the same brand.

          You should know that if you remove from the gun is not fully consumed cylinder, the remnants of foam stain not only the user, but also the tool. The unit for CF DS-1 foam can be left with an unused balloon for more than 2 months without any consequences.

          Repair gun for foam Hilti see in the video below.

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          Information provided for reference purposes. For construction issues, always consult a specialist.

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