Compression Fittings
For pumping oil and grease through tubes, tubing systems, plastic tubes and hose lines, compression fittings are required for properly connecting and combining the different tubes and hoses with one another. The systems obtained in this way are characterized by high degrees of tightness and compression strength.

Compression fittings for regular applications are available in the following designs, among others: steel 1.0718, 1.0402, carbon 20 or 45 (both with chromium-6-free galvanized surfaces)

On the other hand, compression fittings made of high-grade stainless steel (1.4401/1.4571 material) are components that are well suited for application in the food processing industry, in the beverages industry but also in marine and harbor applications and other wetland areas. The reason is that stainless steel is a neutral and highly chemically resistant type of material.

To ensure proper specification, quality and rationalization during installation and use of the compression fittings, the production process is subject to special quality certification according to EN ISO 8434 and DIN 2353 standards. A compression fittings generally comprises a stud with a 24° cone, a coupling nut according to DIN 3870 and a cutting ring according to DIN 3861 shape A or DIN 3861 shape B.

The studs used in compression fittings are equipped with both a screw-in thread (available in different sizes) and an external thread with W bore shape according to DIN 3861, with an incorporated 24° cone. The coupling nuts are also equipped with metric threads; depending on the design and tube diameter, these threads are available in different sizes. In order to ensure the extremely high sealing performance required, the cutting rings are also equipped with a 24° cone.

To make compression fittings available and usable for a variety of applications in lubrication engineering, in hydraulics and pneumatics, the screw fittings produced in standardized industrial manufacturing are initially available with three typical screw thread variants. The screw fittings for cutting rings are classified as LL, L and S types.

In this context, for specification of the operating pressure, it must be taken into account that the burst pressure for compression fittingss is significantly higher than the operating pressure.

The major benefit of state-of-the-art compression fittings is the ease of assembly that the systems provide. Compression fittings are suitable for installation into the most varied processes and are the most widely used screw fitting components. Retention of the tube or hose is ensured by the cutting ring in a crimped connection. Connections using compression fittings are most frequently used with plastic tubes, metal tubes, and hose systems. Our compression fittings or compression fittings  can be used for grease central lubrication systems or viscous oil supply systems.

Compression Fittings or Cutting Ring Fittings
For pumping oil and grease through tubes, tubing systems, plastic tubes and hose lines, compression fittings are required for properly connecting and combining the different tubes and hoses with one another. The systems obtained in this way are characterized by high degrees of tightness and compression strength.
Connector - Straight Union	Click for Other Sizes/Options	Screw Coupling - Straight Coupling	Click for Other Sizes/Options
Elbow Screw Fittings	Click for Other Sizes/Options

Push Locks - Push To Connect Fittings or Push-in Fittings
The pressure range is greatly influenced by the hoses and tubes used and by the ambient temperature.

Instructions for assembly and disassembly of our push-in fittings
Assembly using plastic tubes
1. Cut and deburr the plastic tube at 90° using a hose cutter.
2. Make sure to prevent any oval deformation of the tube.
3. Insert the tube into the push-in fitting to the stop (the plastic tubes from our range are equipped with marks that make it easier to insert them by the correct length).
ASSEMBLY USING HIGH-PRESSURE HOSES
1. Assemble the screw-in socket (left-hand thread) onto the end of the hose.
2. Screw-in the tube stud with claw groove.
3. Apply the push-in fitting onto the tube stud. The O-ring of the plug-and-socket screw connection ensures a tight seal.

As a general rule, during assembly of push-in fittings, it must be ensured that the hose connectors are not subject to tensile loads. If tensile loads act on a push-in screw fitting, this may encumber or prevent loosening the disconnection ring during disassembly. The disconnection ring of a push-in fitting may cant if the specified bending radius of the plastic tube or the high-pressure hose is not complied with.

Disassembly
By pressing the disconnection ring of the push-in screw fitting and simultaneously pulling the plastic tube or the tube stud, the plastic tube / high-pressure hose can be disassembled.

As a manufacturer of fittings and various accessories for central lubrication engineering, Fritsche covers a large part of the demand for connection technology for central lubrication systems. The range of fittings in the field of plugged fittings or push-in fittings is available from distributor Lubrication Technologies, Inc.

Products NOT intended for household applications and must only be installed by trained personnel.

Please remember that our trained and qualified staff of Lubrication Technologies is always prepared to provide help and advice with regard to all technical aspects prior to, during, and after installation.

Push Locks - Push To Connect Fittings or Push-in Fittings
For pumping oil and grease through tubes, tubing systems, plastic tubes and hose lines, compression fittings are required for properly connecting and combining the different tubes and hoses with one another. The systems obtained in this way are characterized by high degrees of tightness and compression strength.
NPT 4mm x 1/8 NPTM Push-in Straight			Click for Other Sizes/Options

Threaded Hose Sleeves for Reusable Ends - Threaded Sleeve
Fritsche screw sleeves or screw sockets are compatible with tube studs and high-pressure hoses by all renowned manufacturers of central lubrication units and central lubrication systems.

Properties / materials:
Screw sleeves are used as connecting elements between the high-pressure hose and a cutting ring fitting or a push-in fitting.

Connecting these components with screw sleeves results in a pressure-tight, stable and detachable connection.

Screw sleeves are available in various sizes suitable for high-pressure hoses in the following diameters, 4.1 x 8.75, 6.3 x 11.3 and 1/8" x 5/16; they can be supplied in different qualities, e.g. galvanized steel, black chromated steel, and stainless steel VA 1.4401/316/V4A.



Assembly / disassembly:
To connect an 840 bar high-pressure hose with a cutting ring fitting or a push-in fitting, a screw sleeve is used together with a tube stud.

For assembly, the screw sleeve is first screwed onto the 840 bar high-pressure hose. Subsequently, the tube stud is inserted into the screw sleeve. The inner thread of the screw sleeve that must be assembled with the high-pressure hose is a left-hand thread; a left-hand thread was chosen to prevent loosening of the screw sleeve from the high-pressure hose during assembly of the tube stud.

This ensures a pressure-tight, stable and detachable connection. These screw connections are designed such that they can be established without the use of special tools and outside of specialist workshops. Then, the end of the tube stud can be assembled in a cutting ring fitting or plugged into a push-in fitting or a push-in screw fitting. For connections with push-in fittings, only such tube studs must be used that are suitable for that kind of system. The suitable tube studs are equipped with a groove in the tube, which is then seated into the push-in fitting. For assembly, the tube stud only needs to be inserted.

Threaded Hose Sleeves for Reusable Ends or Screwsleeves
For pumping oil and grease through tubes, tubing systems, plastic tubes and hose lines, compression fittings are required for properly connecting and combining the different tubes and hoses with one another. The systems obtained in this way are characterized by high degrees of tightness and compression strength.
Threaded Hose Sleeve For Reusable Ends	Threaded Hose Sleeve For Reusable Ends	Threaded Hose Sleeve For Reusable Ends	Click for Other Sizes/Options

Tube Sockets - Tube Studs - Hose studs - Male Stand Pipes
Properties - design - materials:

Tube studs are connection elements that are used together with screw sleeves to connect high-pressure hoses with cutting ring fittings or push-in fittings. This type of connection is solder-free.

Our tube studs are available in various sizes suitable for high-pressure hoses in the following diameters, 4.1 x 8.75, 6.3 x 11.3 and 1/8" x 5/16; they can be supplied in different qualities, e.g. galvanized steel, black chromated steel, and stainless steel VA 1.4401/316/V4A.

Moreover, we provide different designs of hose studs, depending on application conditions:
90° - 45° or straight design. All models are available with or without a groove.

Assembly / disassembly:
In the first step, the screw sleeve must be inserted in the high-pressure hose. Subsequently, the tube stud is inserted into the screw sleeve. The inner thread of the screw sleeve is a left-hand thread. This prevents the screw sleeve from loosening from the high-pressure hose during assembly of the tube stud.
If a cutting ring fitting is used, further assembly requires tube studs without a groove.

For units using push-in fittings, only tube studs with a groove must be used. Push-in fittings are simply plugged onto the matching tube studs.

Tube Sockets - Tube Studs - Hose studs - Male Stand Pipes
For pumping oil and grease through tubes, tubing systems, plastic tubes and hose lines, compression fittings are required for properly connecting and combining the different tubes and hoses with one another. The systems obtained in this way are characterized by high degrees of tightness and compression strength.
Tubular Socket Straight	Click for Other Sizes/Options	Tubular Socket Straight-Swivel Male NPT - replaces 246002	Click for Other Sizes/Options
Hose Stud Straight Double Ended Union	Click for Other Sizes/Options	246002-LT - Tubular Socket Straight - Swivel Male	Click for Other Sizes/Options
Tubular Socket 45°	Click for Other Sizes/Options	Tubular Socket 90°	Click for Other Sizes/Options

Adapters - Extensions - Reducers
Connection pieces are used as adapters, extensions, lubrication nipple extensions or reducing sockets.
They are available in different lengths and thread sizes so that every lubrication point is reached.
In general, a connection piece extension of a lubrication nipple extension is nothing other than an adapter. The connection piece is used as a joint unit, has become a vital part of connection engineering systems and is used in many industrial sectors.

Material: steel, surface galvanized
This extension adapter is a real all-rounder in centralized lubrication systems.
You can use it as
- adapter
- as a lengthening piece
- as a reducer
- as a grease nipple extension.

In our table above you find all information about our different lengths and threads for solderless connections. It is also possible to connect a lubrication line directly to an extension.

Adapters - Extensions - Reducers
For pumping oil and grease through tubes, tubing systems, plastic tubes and hose lines, compression fittings are required for properly connecting and combining the different tubes and hoses with one another. The systems obtained in this way are characterized by high degrees of tightness and compression strength.
Adapters - Extensions - Reducers	Click for Other Sizes/Options	Adapter 90° M10 x 1 Tap	Click for Other Sizes/Options

Supply Feed Line Hoses Nylon Tubing
Here you can find nylon tubings and feed line hoses in various diameters and materials.

The high-pressure feed line hoses and nylon tubes are suitable for grease lubrication and central lubrication systems of all conventional lubrication system manufacturers.

They are used in lubrication systems to connect the progressive distribution unit with the lubrication point or the relubrication distributor (or piston distributor) to the lubrication point.

Please note the remarkable product properties of our high-pressure hoses and nylon tubes with regard to their small bending radius at strikingly low inner and outer diameters.

No special tools are required for assembly of the respective screw fittings for our tubes and hoses.

The materials we use have excellent resistance properties and are insensitive to oil, grease, and lubricants so that they are perfectly suited for application in central lubrication systems. This is proved by the fact that all major manufacturers from the sector of central lubrication units, central lubrication systems, and central lubrication engineering rely on our quality.

HOSES AND TUBES FOR CENTRAL LUBRICATION SYSTEMS
Fritsche 600-840 bar high-pressure hoses are suitable for grease and central lubrication systems of all conventional lubrication system manufacturers. The structure of this type of high-pressure hose (600-840 bar) is such that an inner polyamide 6 (PA6) tube is encased and embedded in polyester mesh. The outer polyurethane coat is adhered onto the polyester mesh and the inner tube. Only this structure provides the required high compressive strength to our hose and ensures indispensable safety for assembly. Of course, the hose is also guaranteed to provide high flexibility. The high-pressure hoses and plastic tubes by Fritsche are suitable for grease lubrication and central lubrication systems of all conventional lubrication system manufacturers. Our plastic tubes and high pressure hoses are used in lubrication systems to connect the progressive distribution unit with the lubrication point or the relubrication distributor (or piston distributor) to the lubrication point.
8.6MM HP Hose - Empty Hose - 50 Meter (164.042 feet) Roll	Click for Other Sizes	8.6MM HP Hose - Grease Filled Hose - 50 Meter (164.042 feet) Roll	Click for Other Sizes