Question on 2" unions (or unions in general). At some point I may need to replace my check valve that is plumbed after my heat pump. Unfortunatlely, the way it was hard plumbed would force me to replace half of the 2" union that connects to the heat pump.
Can I just purchase any 2" PVC union and will it interface properly with the heat pump mating half? I guess I'm wondering if there is an industry standard for unions? Or would I need to purchase the mating piece from the heat pump manufacturer directly?