Tuning Faster Nipple Leak

[markT]

AA S200 has a leak on the male nipple with the "ball Check."

I charged the tank put the nipple in a cup of water and bubbles are coming from around the "ball."

Is it time for a new nipple or maybe debris or oring/seal replacement? Anyone know that could help?

Not sure if this is similar to a "Foster." ( different profile) 

 

[Ezana4CE]

AA S200 has a leak on the male nipple with the "ball Check."

I charged the tank put the nipple in a cup of water and bubbles are coming from around the "ball."

Is it time for a new nipple or maybe debris or oring/seal replacement? Anyone know that could help?

Not sure if this is similar to a "Foster." ( different profile)

I had a similar issue recently on a Crosman gun. After a fill from my tank, all of the air would leak out from the gun’s reservoir through my SCBA tank’s bleed valve once I closed the tank valve and attempted to bleed the fill whip. If I removed the female foster connect on the fill whip while it was draining the reservoir the air would continue to rush out of the gun’s foster fill nipple (disconnecting a fill whip while the reservoir is pressurized is an unsafe practice by the way).

I purchased a new fill assembly for good measure, because I couldn’t get my old assembly apart without feeling like I was risking stripping or breaking something. I was told by customer service rep to place a small drop of silicone chamber oil into the tip of the foster fill nipple (on the mesh screen) and then attempt to pressurize the reservoir. I didn’t do this because I don’t have the oil that was suggested. If I’d ordered some the replacement assembly would likely beat the oil to me.


It’s possible that you have some sort of debris in there and it wouldn’t hurt to check the o-ring either. Have you been able to remove and take apart the assembly to look at the fill nipple components? Can you post a photo of the fill assembly in question? You may only need to change out the fill nipple. 

 

[markT]

I was able to get the nipple off. I had a leak at tank but put a new oring on it. 

 

[markT]

Part Number on Nipple: HNV 18GASM-028 

Female 1/8 BSPP 

 

[Ezana4CE]

@MarkT Good deal. Glad you got it worked out. was it the o-ring on the fill assembly (body) or the o-ring inside the fill nipple.

 

[markT]

I have two leaks.. Solved one at the tank with new Oring . Nipple still leaking at "ball check." I am looking for a new replacement nipple as I don't think I can get "guts" out of nipple/ plug to repair. I tried some lube and to blow out any debris. No luck. So I am still looking for a Faster Part Number: HNV 18GASM-028 

 

[Ezana4CE]

@MarkT I see. I misunderstood. 

 

[Gerry52]

I have magnetic Male foster "dust covers" to keep debris out. If you want one I'll send it to you. Won't fix current problem but might prevent it in the future. Send me your address if you want one. 

Gerry 

 

[markT]

Hi Gerry, the rifle came with a threaded plastic protector / cover. I keep it on the tank. I appreciate it anyway that was very kind. 

 

[fivestar45]

My AA200s has a o ring in the check valve. Your leak is likely coming from that o ring.

A better way around the issue would be to buy an Altaros fill end. It has a gauge and is filled from the front end.

Otherwise just take what you have apart and replace the o ring.

 

[markT]

Maybe these will help explain. There is a bubble in first image that shows where the leak is. The second image is the actual Faster brand (male) nipple / plug. There is a ball seat / check valve and there is the leak 

 

[John "spysir" Blount]

Back when this was the most modern fill design many many and airgunner ( esp. after storage) would find the need to try the recommended "blast it with air a bit, warms & reforms the seal". 

Not an uncommon fitting if you live near a supply shop. 

John

 

[markT]

Found the part on line. $4.77 they want $18 to ship from IN to S.C.