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Brass Ball Check Valve: a Steel Ball on a Lapped Conical Seat
Forge

Yaremwe na

Forge

18. Ukwakira 2026NO
10
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0
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Brass Ball Check Valve: a Steel Ball on a Lapped Conical Seat

A check valve lets water or air through one way only. In a ball check valve a ball closes on a conical seat, pushed there by reverse flow or by a light spring (Wikipedia, Check valve). This one is built from two brass fittings, a seat turned from brass rod, a steel ball and a spring. The build is ours. The picture: our drawing.
Hagati
Half a day

Amabwiriza

1

Turn the seat

Turn a short plug of brass rod to a press fit in the bore of the first fitting. Drill it through, a little smaller than the ball, and countersink the outlet end to a cone that the ball sits in.

Ibikoresho by'iyi ntambwe:

Umurongo w'Umuringa w'UmuhondoUmurongo w'Umuringa w'Umuhondo1 igice

Ibikoresho bikenewe:

Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Igikoresho gifata cy'ibirenge 3 cy'imashini ihinguraIgikoresho gifata cy'ibirenge 3 cy'imashini ihingura
Icyuma cyo kuca cy'itoreroIcyuma cyo kuca cy'itorero
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Urutonde rw'ibyuma bihanga imyoboUrutonde rw'ibyuma bihanga imyobo
Amavuta yo gukataAmavuta yo gukata
Ikigereranyo cya Digitale cy'Amasentimetero 6Ikigereranyo cya Digitale cy'Amasentimetero 6
Amadarubindi y'umutekanoAmadarubindi y'umutekano
2

Lap the seat

Put a trace of lapping compound in the cone, set the ball in it and turn it round under light pressure until the seat shows a bright, unbroken ring. Clean off every trace of compound.

Ibikoresho bikenewe:

Ifu inozaIfu inoza
Ifatiro ry'AmezaIfatiro ry'Ameza
3

Assemble

Press the seat into the first fitting with the cone facing downstream. Drop in the ball, then a light spring that just holds it on the seat, and screw on the second fitting so its end keeps the spring in place.

Ibikoresho by'iyi ntambwe:

Ibihuza by'umuringaIbihuza by'umuringa2 ibice
Igikoresho cy'utubumbe tw'icyumaIgikoresho cy'utubumbe tw'icyuma1 igice
Ikusanyirizo ry'imisemburo yikanyizaIkusanyirizo ry'imisemburo yikanyiza1 igice

Ibikoresho bikenewe:

Ifatiro ry'AmezaIfatiro ry'Ameza
Inyundo ifite umutwe utambitseInyundo ifite umutwe utambitse
Isupana ihindurwaIsupana ihindurwa
4

Test it

Blow through the inlet: air should pass with a light push. Blow into the outlet: nothing should pass. Mark the flow direction on the body.

Ibikoresho bikenewe:

Isupana ihindurwaIsupana ihindurwa

Ibikoresho

4

Ibikoresho bikenewe

12

CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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