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  • I need a tank cylinder valve

    The CNG shop I went to said I need a new tank cylinder valve. Does anyone know where I can get one? It can be new or used, as long as it works.

    Thanks!

  • #2
    Re: I need a tank cylinder valve

    Just about any GM valve, Cavalier, Van, or Pickup will work if it is an Impco or Quantum (factory installed) system. You might have to buy a tank as most junk yards don't pull the valve from the tank.

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    • #3
      Re: I need a tank cylinder valve

      Where is a good place to buy tanks?

      Thanks!

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      • #4
        Re: I need a tank cylinder valve

        I have some manual valves. But I will need to know the thread and connection.
        A pic. would help

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        • #5
          Re: I need a tank cylinder valve

          Would it be helpful if I took a photo of the tank where the cylinder valve is? It has a full tank of CNG and I don't dare mess with taking the valve out. My mechanic might have the ability to do that safely, but I dont.

          Thanks.

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          • #6
            Re: I need a tank cylinder valve

            Just take a pic of the valve in the tank.

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            • #7
              Re: I need a tank cylinder valve

              CNGMike,

              Here is the photo I took yesterday. Is this what you had in mind?

              Thanks.
              Attached Files

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              • #8
                Re: I need a tank cylinder valve

                Sorry I only have manual valves.

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                • #9
                  Re: I need a tank cylinder valve

                  That's the standard "use it on everything" GM valve. You need to replace it with a GM valve as the tank temp sensor is built in the valve. If it is full of CNG and the electric valve will not operate (have you tried to put 12 volts on the valve?) you need a special tool to open the pilot valve to vent the cng. Make sure you don't apply 12 volts to the temperature sensor !

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                  • #10
                    Re: I need a tank cylinder valve

                    Is it easy to tell which connection is for the temp sensor and which is for the valve?

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                    • #11
                      Re: I need a tank cylinder valve

                      There are two connectors on the valve. The connector with the black body is for the valve itself, the connector with the grey body is for the temperature sensor. Applying 12 volts to the pins in the black connector (polarity not important) should give you a audible "click" from the solenoid and the valve should open. Caution---If you are changing a tank valve and not sure if the tank is empty, the only way to be sure is by manually opening the valve with a special tool. If you are not sure about this, don't even try it. You or others could be injured or killed as you unscrew the valve from the tank.

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                      • #12
                        Re: I need a tank cylinder valve

                        i have a tank that is out of the car ! and need to know if the tank valve is working ?? will this test it for me or will i need to do more than the 2 wires on the black body connector ?? thank you p.s i do not know if is full or not !!!! any help will help !!! thank you ( no one around here to get help from )
                        Last edited by CNGCHUCK; 12-07-2013, 06:52 PM.

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                        • #13
                          Re: I need a tank cylinder valve

                          I have a good working GM valve but because I will have to scrap the tank it's coming from I want $750 for it. Or I'll just give you both the tank and valve. Came out of a cavalier.
                          sigpichttp://WWW.CNGMOTORS.COM
                          SAVE TIME. SAVE MONEY. SAVE THE ENVIRONMENT.

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                          • #14
                            Re: I need a tank cylinder valve

                            Originally posted by CNGCHUCK View Post
                            i have a tank that is out of the car ! and need to know if the tank valve is working ?? will this test it for me or will i need to do more than the 2 wires on the black body connector ?? thank you p.s i do not know if is full or not !!!! any help will help !!! thank you ( no one around here to get help from )
                            This is one of the areas of service and repair that is NOT do it yourself. Not complicated, but trying to remove a valve with gas in the cylinder is a deadly game. Maybe someone here can direct you to a shop that is qualified in your state.Please have a look at this thread too http://www.cngchat.com/forum/showthr...ing-CNG-valves
                            Last edited by Lakewood90712; 12-08-2013, 12:24 PM.

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                            • #15
                              Re: I need a tank cylinder valve

                              ok !! thank you !! i do not want to pull the valve at all !! i got this tank to replace one in a older cavalier ( it is good till 2016 and looks to be out of a cavalier ) but i do not know any thing about it (full or not or if valve is good ? ) i just want to test it to see if it is in good working order ? a lot of work if it is bad ( it is also cold here and i will do it outside !! ) i have put 12 volts to the valve wires but it did not open ! will i need to have the rest of the wires pluged in also to test it ? it may not have any p.s.i. in it at all will the valve work that way or will it need some p.s.i. ( i have a home pump also ) and i do know to think that it is FULL at 3600 p.s.i. at all times !! and can i test the temp. sensor also ??? i thank you for any info. you can give me chuck

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