RIB

elect70, Mar 3, 1:35am
been given a 3 m inflatable free old but still looks ok but its hasnt got an inflator so cant pump it up , no brand name on it so are they a generic thing one size fits all ., presume boat places would sell them .
intrade, Mar 3, 2:00am
s_nz, Mar 3, 8:39am
They typically have bayonet style fittings like the hand pumps in the link above
tygertung, Mar 3, 7:12pm
Can you use your air compressor? Be careful though, they probably don't want a lot of pressure. Maybe can use an airbed inflator.
elect70, Mar 3, 11:45pm
ihave a 12 volt compresor with tire inflator but the RIB hasnt got a valve just a tube sticking out of it
budgel, Mar 4, 12:07am
Have a look online for 'RIB inflator valve', you should find something that fits.
tygertung, Mar 4, 2:22am
That is not suitable for a boat as it is low volume high pressure. You are wanting high volume low pressure pump.
s_nz, Mar 4, 4:06am
You can get car tire fitting to boat adapter's.

https://www.aliexpress.com/item/33044465277.html

Have seen one for a thundercat before (They run fairly high air pressure, especially in the hijackers).

Obviously need to be mindful not to pop the boat, and would need a 230v or a really big 4x4 style 12v compressor to fill a boat in a reasonable time.
tygertung, Mar 4, 7:17am
I saw a pool toy which was the same material as a rib and it was 1.5 psi max, and it was easily as firm as a rib.
s_nz, Mar 4, 8:43am
3 to 3.5psi is common for boats, but of course it varies by boat. by boat Thunder cat is rated for 3.6psi in the main tubes (people run them at around 7psi when racing). The hijackers get 9PSI I think (all the time).

Gauges are available for purchase, as are electric pumps designed for this purpose.

https://orakeimarine.co.nz/product/bravo-12-electric-air-pump/

But I think OP will be well served by a cheapish hand pump. Its a small and free boat.
yz490, Sep 6, 4:44am
Could you get an old style vacuum cleaner that blows out the top fitting as well as sucks. Large volume but low pressure. Or was thinking the other day what i could use my leaf blower for--other than leaves, puts out plenty of volume.