the use of natural connections, is strictly prohibited counterparts. What do you mean by "strong opposition"?
Pro, strong counterpart refers to the valve in the pipeline connection, generally refers to the thread connection or welding to connect the valve, the valve and pipeline connection imposed by the larger external force, it will cause great stress and plastic deformation, easy to cause the valve to open or close the lax.
Strength of the corresponding meaning is: the valve used to connect the original way of normal connection, such as silk mouth with the same specifications of the silk mouth connection. You can't connect the wires with different sizes.The pipe clamp is fixed in the counterpart application, from the interface at 200mm was measured with a ruler, when the nominal diameter is less than 100mm, the tolerance of sigma <1mm, when the nominal diameter is greater than 100mm, tolerance for a <2mm, but the length of tolerance is less than 10mm, no strong counterpart or eccentric pad counterpart.
From the literal explanation, the strong counterpart connection is different from the normal connection. Valves are naturally connected to pipes or equipment, including threaded connections, flanged connections, clamp connections, welding, butterfly valves, clamp connections, etc..Strong mouth connection, similar to the butterfly valve on the clip connection, just outside of clamping method used in other valves (not seen on the clip connection with other valves), so this will depend on external interface of the valve (wafer type butterfly valve, said strong counterparts except).
Refers to the installation of the interface dislocation, misalignment or installation of the wrong size and forced connection, resulting in installation stress exists, in use, it is prone to abnormal damage.
