Our shop only had one floor pump.
It's this SKS レンコンプレッサー (air compressor pump).
Occasionally customers ask me, "Can I borrow the pump to fill up some air?"
but I absolutely won't let them use it.
I know that sounds terrible. But there's a reason.
When someone unfamiliar with a Silca-style pump head uses it,
they very often over-tighten the cam and break it.
So at our shop, I've always been the one personally pumping up the tires.
But I felt a bit awkward about that, so the other day I stocked a Park Tool floor pump
"for everyone to share,"
but the stock pump head with dual ports for Presta and Schrader valves had terrible air leakage,
and the air pressure gauge needle would drop to zero immediately.
I was so frustrated that I cut the hose and threw away the pump head.
What I replaced it with was a SILCA Presta-only pump head.
Since it has no levers or anything like that, the design is intuitive and easy to understand—that's what I really like about it.
Even when tube pressure gets high, the rubber seal packing fits so perfectly
that the connection won't suddenly pop off during use.
If you feel the seal getting loose, you can replace the packing.
Since this is a manufacturer trusted by many users over many years,
spare parts supply is reliable.
Regardless of valve length, you just push it all the way in.
It's highly durable, so it won't break easily.
Update:
I received several comments like
"Is this a new product from ○○○○○?" and
"It just looks like ○○○○○—is my mind in the gutter?"
Well, I intentionally painted it to look like ○○○○○,
and if you read between the lines of my post, it's obviously intentional.
So the answer is: my mind is the one in the gutter.
It's this SKS レンコンプレッサー (air compressor pump).
Occasionally customers ask me, "Can I borrow the pump to fill up some air?"
but I absolutely won't let them use it.
I know that sounds terrible. But there's a reason.
When someone unfamiliar with a Silca-style pump head uses it,
they very often over-tighten the cam and break it.
So at our shop, I've always been the one personally pumping up the tires.
But I felt a bit awkward about that, so the other day I stocked a Park Tool floor pump
"for everyone to share,"
but the stock pump head with dual ports for Presta and Schrader valves had terrible air leakage,
and the air pressure gauge needle would drop to zero immediately.
I was so frustrated that I cut the hose and threw away the pump head.
What I replaced it with was a SILCA Presta-only pump head.
Since it has no levers or anything like that, the design is intuitive and easy to understand—that's what I really like about it.
Even when tube pressure gets high, the rubber seal packing fits so perfectly
that the connection won't suddenly pop off during use.
If you feel the seal getting loose, you can replace the packing.
Since this is a manufacturer trusted by many users over many years,
spare parts supply is reliable.
Regardless of valve length, you just push it all the way in.
It's highly durable, so it won't break easily.
Update:
I received several comments like
"Is this a new product from ○○○○○?" and
"It just looks like ○○○○○—is my mind in the gutter?"
Well, I intentionally painted it to look like ○○○○○,
and if you read between the lines of my post, it's obviously intentional.
So the answer is: my mind is the one in the gutter.