Hitachi 371208 J-394 Reduction Valve Set 16Gant1865Dm Nr1890Dc Nr1890Dr

Fit perfectly and easy to work with it

Great product, works exactly as intended. It was dispatched and received promptly.

It worked quite well in restoring my nailer from being unable to properly sink nails even in softwood. The only downside I had with this tool is how much you may tighten it down. There is a nibble on the end which opens a valve on the nailer but when I checked it afterwards it had become bent. Otherwise I can highly recommend this tool if you want to be able to restore your nailer by yourself. It’s a bit pricey yes but it’s also not cheap to send it for repair each time it needs some air refill.

Fills your nail guns as part of a maintenance that’s needed after so many uses . Since I have four different Metabo nail guns, I purchased this so I can refill the air chamber

This is an essential accessory if you own a Hikoki cordless nail gun. This is needed to re-pressurise your nail gun if the pressure drops. I’ve re-pressurised two of my three nailers and they work like new! Worked a treat. Highly recommend.

Works on my metabo 16 gauge, but needle was bent

I’m very happy so far I used to recharge my framing nailer ,men I’ll tell you what ,that nail gun after recharge ,working like a dog! I’m recommending this adapter, use it with care , it will last longer

This valve set allows you to refill your nailer gun at home, no need to send it to a service centre. Pays itself the first time you use it. Price was lower than ordering from Hikoki Europe and only took a few days to arrive.

This tool is a must if you have metabo cordless nailers

I bought this valve to repair my hikoki 1st gen 16g nailer which was low on pressure and needed to be regassed. I fitted a Schrader valve on it with some pft tape so I could connect it to my Makita tyre inflator. I watched a YouTube video how to connect the valve to my nailer and what psi to set the inflator to (110 psi). Re gassed my nailer back to full pressure and is now operating like new. If you have hikoki nailers this is worth a purchase as it will save you time taking it to a repair shop and also extend the life of your nailers. Recommended.

The Hitachi 371208 J-394 Reduction Valve Set is a precise, reliable fix for my 16G air tools—slots perfectly into Hitachi nailers like NT1865DM, NR1890DC, and NR1890DR, restoring smooth pressure regulation without leaks or inconsistent shots. I love how the compact design handles high-volume work on job sites, keeping air flow steady for framing or roofing. Solid build that feels like OEM quality and gets the compressor humming right again.

OK

If you own a Metabo HPT cordless framer and you put regular use into it, eventually they need to be refilled to keep those nails sinking properly. This tool allows you to refill your nailers air chamber in a few simple steps without sending it away to be serviced. Worth the investment.