Water buffalo Lid Breather

[flyfishtrailer]

Hi all...looking for some help locating the breather or vacuum breaker that screws into the lid of the M149. I run the NSN and part number from the TM ( 8741778 and 4730-00-168-2073) and find nothing that helps me identify it so that I can find an alternative. I also did several searches using a combination of water buffalo, M149, breather valve, etc. with no results. What am I missing? Any help with a link or common name to help my search would be appreciated.

 

[Guyfang]

This is what I came up with. Are you sure you got the NSN right?

ADAPTER,STRAIGHT,PIPE TO BOSS

	THREAD CLASS	2 2ND END
	CONNECTION STYLE	EXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END
	CONNECTION STYLE	PLAIN (PIPE) 1ST END
	CONNECTION TYPE	THREADED INTERNAL PIPE 1ST END AND THREADED EXTERNAL BOSS 1ST END
	NOMINAL THREAD SIZE	0 3/8 INCHES 1ST END
	NOMINAL THREAD SIZE	1 INCHES 2ND END
	NOMINAL OVERALL LENGTH	2 3/8 INCHES
	MATERIAL	COPPER ALLOY OVERALL
	MATERIAL DOCUMENT AND CLASSIFICATION	QQ-B-626. COMP. 22 TEMPER 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
	THREAD SERIES DESIGNATOR	NPT 1ST END
	THREAD SERIES DESIGNATOR	UNF 2ND END

 

[glcaines]

The part number is 7034882. Look in TM 9-2330-267-14&P. It doesn't show an NSN.

 

[Guyfang]

7034882 = NSN 4820-00-856-1722

 

[flyfishtrailer]

This is what I came up with. Are you sure you got the NSN right?

ADAPTER,STRAIGHT,PIPE TO BOSS

	THREAD CLASS	2 2ND END
	CONNECTION STYLE	EXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END
	CONNECTION STYLE	PLAIN (PIPE) 1ST END
	CONNECTION TYPE	THREADED INTERNAL PIPE 1ST END AND THREADED EXTERNAL BOSS 1ST END
	NOMINAL THREAD SIZE	0 3/8 INCHES 1ST END
	NOMINAL THREAD SIZE	1 INCHES 2ND END
	NOMINAL OVERALL LENGTH	2 3/8 INCHES
	MATERIAL	COPPER ALLOY OVERALL
	MATERIAL DOCUMENT AND CLASSIFICATION	QQ-B-626. COMP. 22 TEMPER 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
	THREAD SERIES DESIGNATOR	NPT 1ST END
	THREAD SERIES DESIGNATOR	UNF 2ND END

Guyfang.....with your help I was able to narrow it down and came up with this. Adding the link for the next guy (pun intended).

Breather Vent, Nickel-Plated Steel, 3/8 NPT Male | McMaster-Carr

 

[Guyfang]

Good to go!!

 

[flyfishtrailer]

Good to go!!

Arrived today (McMaster/Carr is fast as I only ordered two days ago) and fits like a glove.

 

[Tinstar]

McMaster-Carr Website.

 

[Torisco]

I used this vacuumn relief fixture on my M1112 water buffalo and it works great.


24 March 2023 purchased American Made 3/8” Breather vent vacuum =$10.54
relief pressure equalization filter E-Bay Sellerocity

American Made 3/8" Breather Vent Vacuum Relief Pressure Equalization Filter | eBay

Noise muffling during pressure equalization. First, we are incredibly easy going and understanding. Cylinders, valves, crank cases, gear boxes, oil tanks, reservoirs, air tools. Very popular in space limited applications due to low profile.

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