JANDY 1 1 2" 2" 90 Degree Check Valve 7511 bioremediation It combines a liner lock metal blade It combines a liner lock with our Max Lock System to make sure you can comfortably use your knife without it accidentally closing and also be sure it won’t open in your pocket RECHARGEABLE DUAL POWER Each COAST Rechargeable Dual Power product comes with a ported ZITHION X™ rechargeable battery or a non ported ZITHION™ rechargeable battery and is compatible with either COAST Extreme Performance alkaline batteries or other brand name battery types quality choice and is available in various sizes ranging from ¾" to 4" The Jandy Pro Ball Valve is the economical