Coupling for plumbing

[HowieE]

I thought I was looking for a Sharkbite coupler but Sharkbite says they don't make a coupler for the Gray Poly piping in my 91 trailer.

Is there another brand that is available?

[Thalweg]

According to their website, they do make one.
Polybutylene Conversion Couplings: 1/2" PB X 1/2" SB PB & 3/4" PB X 3/4" SB PB

[HowieE]

I don' t want a conversion coupler I need a coupler, poly to poly to splice a pipe I had to cut when replacing the hot water heater.

[Thalweg]

OK, how about this one then:
Amazon.com: SMC KQ2 Series Polybutylene Terephthalate Push-to-Connect Tube Fitting, Straight Union, Tube OD, White: Industrial & Scientific

I just Googled "push to connect polybutylene pipe". There seem to be quite a few options.

[HowieE]

I think I found it. Sea Tech fittings.

[Silver Hawk]

"I need a coupler, poly to poly to splice a pipe I had to cut"

I bought them at Home Depot when I did my change over - don't know the brand, but they came single or in a bag of ten - still have some, the come in handy when you cut tubing for a long run a little short!