Fliptop Size S Plastic Vent Plug Length 57MM For Forklift Battery Water Filling

LK-CAP-1 Fliptop Vent Plug 57mm for Forklift Battery Water Filling

The short cap in a three-size range: size S, 57mm total length, flip-top, with a clear cap for level reading. It is the short end of the range, used where the cell opening is shallow.

Why the Range Has Three Sizes

Cell openings differ in depth

The three sizes exist for one reason: cell openings differ in depth between battery makes. A cap that is too long stands proud of the cover and can be knocked; one that is too short does not seat.

The 57mm size

The 57mm size is the short end of the range, used where the opening is shallow.

Flip the Cap, Read the Level

A hinge instead of a tool

The clear top opens on a flip hinge: lift it and the electrolyte level is visible, without unscrewing the plug or disturbing its seal. That is the whole feature, and it is the one that changes behaviour, because a check that takes a second gets done and a check that needs a tool does not.

Deliberately minimal structure

The structure is deliberately minimal. There is nothing inside to stick, no separate float to misalign, and no small parts to lose when the cap is open over a pack.

Materials and Colours

PP body with a rubber seal, in yellow and red as well as the standard finish. Colour is not decorative here: on a site with several voltage classes it is a cheap way to make a pack recognisable, and a red cap among grey ones is easier to spot when someone is checking a rack in a hurry.

Specification

Fitting Notes

Hand-tight only. A cap forced with a tool distorts the seal and is the usual reason a vent plug weeps; if a cap will not seat by hand, the size is wrong rather than the thread being tight.

Choosing the Size

Measure the depth of the opening, or match against the cap being replaced. Where a mixed fleet is involved, order the three sizes together, the cost difference is trivial and it removes the guesswork from the next replacement.

Matching Caps to a Mixed Fleet

Batteries from different makers end up in the same bay, and their openings are not the same depth. Keeping all three sizes in the store is cheaper than a wrong-size order, and it means a cap replaced today matches the rest of the pack rather than standing out. Write the size on the battery record when a set is fitted, and the next replacement needs no measurement at all.

Warranty and Supply

One-year warranty on the cap. Parts are made by established domestic manufacturers and inspected before dispatch, with packing in standard export cartons so a bulk order arrives intact. Technical questions are answered online during the order, and after-sales queries are handled by the same route.

FAQ

Does the cap have to be unscrewed to check the level?

No. The clear top opens on a flip hinge and the level is visible without disturbing the seal.

How do I know whether I need the 57mm size?

Measure the opening depth. LK-CAP-1 at 57mm is the short size; the range continues at 67mm (LK-CAP-2) and 77mm (LK-CAP-3) for deeper openings.

What is it made of?

A PP body with a rubber seal, supplied in yellow, red and the standard finish.

Send your cell opening depth and the quantity required to confirm the LK-CAP-1 fit and receive a quotation.