Description Literature Accessories Description The Meriam Z1089-1 3-Valve Manifold is a 3-valve manifold, installed 316 SS, 316 SS tubing, and with 1/4" FNPT connections. SWP: 500 PSIG. The manifold is an accessory for the Meriam M200 Smart Manometer, Meriam M200-LS Smart Manometer, Meriam M201 Enhanced Rotary Gas Meter Tester, and the Meriam M202 Absolute Manometer. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories Meriam Precision Absolute Manometer M202 Meriam Smart Manometer M200 Meriam Enhanced Rotary Gas Meter Tester M201 Meriam Lab Standard Smart Manometer M200-LS