Mrod Valve question!!!

Forums PCP Airguns Mrod Valve question!!!

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    Keith2324
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    I just took apart my .22 Mrod as I had a leak from the barrel. I discovered the poppet on the valve has disintegrated. Are there any stronger versions of this or are they all pretty much the same. 

    Thanks.

    Keith.

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    spysir
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     I sure AJ will be along and help and he should be able to correct me if’in needed.  The stem head material was white?  As I was “thinking”(???) they use black ones at least these days? (borrowed pic from stevev)  http://i120.photobucket.com/albums/o189/slvines/slvines045/Crosman%20valve%20stems%2012-21-2015%20001_zpsmv9crf7v.jpg 
     
    The factory part certainly is inexpensive like all crosman parts just order extra stuff as shipping is the same ( and low cost).   Are you hitting the valve realy hard with you settings?  

    John

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    Keith2324
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    No that’s not the case. I have two Mrods (.22 and .25) that I never shoot. I was thinking about selling them and decided to get them out and give them a good inspection. The .22 has been sitting for over 3 years. I guess it just deteriorated over time. 

    Keith.

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    ajshoots
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    The factory black ones that are used in all the new valves are the only ones I am aware of. WAR uses there own poppets, but unsure if they will work as a drop in for a stock valve. The marauder poppet seems to be a “wear” item as I have replace a bunch in both mrods and prods

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    hillairgun
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     I took my first Marauder rifle apart in 2012. The valve stem then, and everyone since, has had black plastic on it, not white . Maybe some of the first Marauder rifles used them ?. 

     If you purchased the rifle used, you may be able to find out the date of mfg. by examining the first numbers in the serial number on the reservoir. If indeed used, the prior owner may have changed out the valve. 

    As long as you don’t fill the rifle higher than the mfg. recommended pressure of 3000 psi, or run the rifle on CO2 ( or somehow get a defective part from the start ? ) the factory part should work for many hundreds or even thousands of shots.  

    FYI- I just ordered some the other day.

    Part number and price were: 
    Part name: over molded valve stem 
    Part number: 1700-140  
    $1.72 each  +  shipping $4.00Crosman phone:  1-800-724-7486

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    ajshoots
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    Kieth, how old is your Marauder? I had marauders in 2009 when they first came out (.177 and .22) the .25 came a year later I believe. I never tore those guns apart but after thinking about John pointing out the white poppet, I thought I remembered white poppets pictured by guys that were working on Marauders back then. I called Crosman and they confirmed that white was used on the early guns but were unsure of when they switched to black? The oldest gun I have had since the orginal marauders was 2011 and the poppet in that gun (.177) was black, but that gun was a factory refurb and could easily have had the valve replaced when Crosman refurbished the gun?

    As Tim points out the poppets should last a long time. You never know the history of a gun, but one prod that had a broken poppet had over 5000 shots thru it in less than 6 months. The lower larger diameter portion that seals against the valve, had seperated from the smaller upper portion that holds the spring. Most have been broke in this manner, but a couple had the entire head broke off.

     

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    Keith2324
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    Ajshoots I had to go back and look at some of my old posts over on the GTA since I couldn’t remember exactly when I purchased it. I have one of the earlier versions from around 2009. As I mentioned in my previous post I had the gun sitting pressurized and unused for quite a long time. I had since bought two FX’s and two Daystates so my Mrods didn’t get any love. I will point out though that the gun did hold air all that time. It wasn’t until I shot it that the poppet failed. Again I think the material just deteriorated over time. I have ordered two new valve stems and should get them next week. 

    I would also like to mention I only filled that gun with a Benjamin hand pump. The internals of the gun were totally without moisture or corrosion. So I can say, at least in my experience, using a hand pump had no deleterious effects. 

    Thanks guys for all the help.

    Keith.

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