The era of socialism gave the world good quality sanitary appliances of domestic design - valve cranes with rubber crane boxes. Elements of the mixer worked qualitatively and systematically, fulfilling five-year, and sometimes ten-year plans. And it was unimportant, in order to deliver water it was necessary to unscrew the valve for 3 turns or change in case of a malfunction a water-riddled gasket. How to make a replacement for the faulty crane axle box "The Last of the Mohicans"?
Content
Rubber crane, the device
The first copy of the domestic shut-off valves of the mixers was the crane with a rubber gasket, widely used in valve systems. Classics of sanitary ware in the form of valves with worm gear was popular and involved in industry and everyday life.
We will not hide the rubber axle, the principle of operation of which is based on the extension and closing of the worm gear valve, for years has been fulfilling and fulfilling the functions of stop valves. The device is enlarged like a powerful screw in a brass body, one end of which is connected to a valve, and the other end is connected to a rod. The crane is crowned with an axle rubber cuff gasket, which performs the function of water supply access.
Most homeowners believe that the pluses of the rubber girder crane are in the operational simplicity of the valve fittings: there is no need for a complete replacement of the unit, insignificant cost of the rubber gasket during repair.
However, with the passage of time, during the operation, the gasket lost its original density of structure, which was reminiscent of a sharp sound and hum, echoing from the pipes. Therefore, the minus crane of the rubber box is the need for timely replacement of the gasket in case of a malfunction.
Crankcase malfunctions, useful tips
All the existing malfunctions of the mixer with rubber gasket - water pouring or leaking while rotating the valve handles, indicate a breakdown of the rubber structure and deformation of the gasket.
deformation of rubber gasket
For laying the crane axleboxes use technical rubber (GOST 7338-90), manufactured industrially in the form of sheets or a roll of material thickness δ = 2-5 mm. Rubber technical maintains operational properties at t - 40 plus 80 ° С. The finished product is laid with a round-shaped gasket for the diameter of the brass plate of the valve's locking part with the inner ø under the screw fastening. To repair the mixer by hand means to replace the gasket.
You can buy a rubber gasket in the sanitary ware shop or cut it manually from a piece of rubber with a thickness of 3-4 mm (according to the model of the deformed element).
types of rod element
For domestic mixers with a rubber gasket, it is necessary to distinguish the upper part of the rod in the form of a tetrahedron
(7x7 mm) with a spindle or polyhedron. For imported mixers in the top rod part 20 or 24 slots. There is a possibility of simultaneous installation of the handle of the spindle.
Gates of factory manufacturing are made "under a square" and "for a slot".
Determine the composition of the fault can be by parsing the valve mechanism. In some cases, it is sufficient to lubricate the stuffing box or to clean the thread of the rod element.
Replacement or repair of the rubber crane of the axle box practically does not differ from the repair of the ceramic unit. Naturally, the question arises: "What is the preference for a rubber crane or ceramic crane?"
Recall that rubber crane axle boxes are removed from domestic production, complicating self-repair or replacement.
We repair the crane of the rubber box with our own hands
A selection instruction verified by plumbers
- We overlap the water supply and dismantle the decorative element from the valve.
- We unscrew the screw fixing the valve on the rod.
- Remove the flywheel valve and decorative sleeve.
- We unscrew the crane axle, picking up the tool under the seat of the valve.
- Unscrew the screw fastening the rubber gasket.
- We inspect the condition of the gasket and, if necessary, make a replacement.
- We fix the new gasket in place.
- We place the crane axle with the replaced gasket in the mixer.
- Tighten the upper nut.
- Install the valve in place and fix it on top.
- We place the top cover of the handle.
We renew the water supply and check the serviceability of the mixer for leakage.
How to make a replacement rubber crane axle box, shown here.
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