Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Are there check valves on the gas splitter shutoff valves?
Document: Everything I did recive was in good shape but it was missing 2 x Ball Lock Gas fittings and Co2 regulator with splitter and it shows hose clamps in the pictures but it didn't come with those either.
This is a great product, I put it right to work as soon as it arrived at my doorstep. I had a problem with one of the ball lock valves and another was sent to me right away.
This is a good set up for two party kegs, and a good starting point for the keg system I'm building in my house. Two kegs, all new gaskets plus a spare set.My kegs were in good shape. Lids and valves were in pretty good condition. I did replace one poppet valve right away--about $10. The old one worked about 1/2 the time, which obviously is 1/2 as much as you need.The regulator and hose is all pretty solid. And all the fittings are air-tight.
everything was as expected, New CO2 bottle, hoses, fitting, connectors and regulator (regulator could've been better quality but it works fine). Kegs were obviously used, but they were very cleaned inside and out and did not leak under 40 psi of pressure,
everything is fine only the almost one month delivery time was excessive, otherwise I am happy with this set up and ordered and received an in the door double tap
Used this setup to keg my first home brew. Everything was here that I needed. I cleaned and replaced all of the rings with the supplied spares and there were no leaks. I am very happy with this purchase. Now, I just need to brew more beer for the second keg...lol
This is a great kit to start off kegging! It contains everything you will need to start and the quality of everything is great! Plus you won't have to deal with all of those bottles ever again!!!! !Be warned if you are anything like me this is only the beginning, you will be buying more and more equipment as your desire to expand and improve your set-up will never cease! That being said having your own beer on tap is absolutely awesome, no regrets!The one Con...Picnic taps are annoying...they're great to have if you want to take your keg along with you but if its your primary way of dispensing its going to get annoying fast!
They sent me out an upgraded regulator at no additional cost to me, and sent me out a call tag to send the defective regulator back. (+1 star). I would purchase this again as I was happy with the overall value and the great customer service.
The regulator was a piece of garbage and I wasted a whole CO2 tank because of it. The kegs were in great condition and all the hardware has worked flawlessly. Kegco was easy to work with and refunded me the cost of the regulator when I sent it back, even knowing that I was going to buy a regulator from another vender. I would recommend everything except the regulator, unless they decide to actually offer a decent product.
The kit, as shipped, will likely produce very foamy pours without new hose.
Answer: There is one before the split.