Couplings, flanges and clamps
Technical reference and selection guides on couplings, flanges and clamps.
18 guides
-
How does a Camlock coupling work and where are its limits?
A Camlock or cam and groove coupling is a quick-connect family in which an adapter and a coupler are joined by means of arms. The correct size, seal, material and service limit are selected together; the fact that the c…
-
Specifying types of cam and groove couplings in orders
Camlock type letters describe whether the coupling is an adapter or a coupler and whether the other end is threaded or has a hose shank. In addition to the type letter, the size, thread standard, material, seal and appl…
-
Flat-face hydraulic quick couplings
A flat-face hydraulic quick coupling uses an interface that makes the connection face easier to clean. A low-spillage objective or a flat face does not mean that every model can be connected and disconnected under press…
-
Poppet-type hydraulic quick couplings
In valved quick couplings, the internal valves are part of fluid control when disconnected. The presence of a valve is not a guarantee of zero spillage, zero air inclusion or connection under pressure; the coupling seri…
-
Selection questions for dry disconnect couplings
A dry disconnect coupling is a design that manages the connection and valve movement together in order to limit fluid release during disconnection. Dry disconnection is not the same function as a safety breakaway coupli…
-
Identifying the series of hydraulic flange connections
In a hydraulic four-bolt flange, the hose flange head, clamp parts, O-ring, port face and bolts work together. Merely seeing the flange head diameter or four holes does not mean that the correct series and assembly have…
-
How to distinguish Code 61 from Code 62
Code 61 and Code 62 are different series designations for hydraulic flange connections; the same nominal hose size does not show that they are interchangeable. The flange head, hole pattern, bolts, seal and the product'…
-
Why PN and Class flange designations are not the same
PN and Class are designations used in different flange classification systems; Class 150 does not directly mean 150 psi. The permissible pressure is determined from the relevant standard table together with material and…
-
Dimensional references for hygienic clamp connections
In a hygienic clamp connection, the clamp outside diameter, tube diameter and flow bore are different dimensions. For a correct match, the connection standard, series, ferrule geometry, gasket and clamp must be defined …
-
Order information for DIN hygienic fittings
In a DIN 11851 type hygienic fitting, the nut, connection ends and seal together form a system. Ordering only by the round nut or the nominal diameter is not sufficient for correct geometry and cleanability.
-
Hose clamp types and their limits of use
Clamp selection is not just a matter of finding a band that fits the hose outside diameter. The hose construction, hose shank, pressure or vacuum, temperature, material and the manufacturer's assembly method must be eva…
-
Band and diameter range of worm drive clamps
With a worm drive clamp, selection starts with the outside diameter of the hose on the fitting falling within the appropriate clamping range; however, band construction, material, position and the manufacturer's torque …
-
Selection checklist for heavy-duty clamps
A heavy-duty clamp may offer a different clamping and housing construction for certain applications; however, its name does not show that it can be used on all high-pressure or steam hoses. The combination verified with…
-
What is a spring-tension clamp used for?
A spring-loaded or constant-tension clamp may be designed to accommodate diameter changes in the assembly within a certain working range. This feature does not resolve all causes of loosening; the correct diameter, spri…
-
Why is clamp tightening torque product-specific?
Clamp or fitting torque depends on the product code, size, material and assembly condition concerned. A safe torque should not be determined by looking at the screw diameter or by taking a value from another brand's tab…
-
Camlock guide: how does it work, how to choose?
A camlock is a quick, tool-free coupling in which a male adapter and a female coupler are joined by closing the arms. When choosing, temperature, material, maximum working pressure and manufacturing quality are assessed…
-
What is a LOC type clamp and where is it used?
A LOC type clamp is a fastening element with a circular body fitted with a locking collar and a screw mechanism; it does not slip off the fitting or camlock it is mounted on. It is usually made of 316 stainless steel, a…
-
Camlock gaskets: silicone, Viton and NBR
Camlock gaskets are made of silicone, Viton and NBR. Silicone offers flexibility and high temperature resistance, Viton resistance to aggressive chemicals, and NBR an economical solution for water, oil and gas; the choi…
Customers with an account can access all guides, terms and calculators. Sign in to see all guides