Check Valves – Threaded and Slip from AquaScape Slip: 2″” – 99202 Review AuntWrecker March 6, 2018 August 4, 2018 No Comments on Check Valves – Threaded and Slip from AquaScape Slip: 2″” – 99202 Review Available in the following:Threaded: 1 1/4″” – 99199Slip: 1 1/2″” – 99201Slip: 2″” – 99202 Slip: 2″” – 99202