Models 2090/2085 Welch corrosion-resistant diaphragm vacuum pumps are driven by explosion-proof motors rated for Class I Hazardous Locations (HazLoc). The aluminum pump head is PTFE coated and diaphragm is covered by a PTFE liner to separate chemical media from the diaphragm. The explosion proof motor is directly coupled to the diaphragm pumping module. Stainless steel tubing is used to connect pump heads together in one and two-stage configurations. The vacuum pump doesn't come with an on/off switch, plug or cord, but must be conduit wired to the on/off explosion proof control panel. Always use a certified electrician for proper installation of vacuum pump with explosion proof motor to meet your local municipal codes. FEATURES & BENEFITS V Maximum vacuum to 29 in. Hg (25 Torr) V F itted with Class I, Groups C&D explosion proof motor (CSA/UL) Contact your local Welch area sales manager for further information. Gardner Denver Thomas Inc. 1601 Feehanville Drive Suite 550 © Gardner Denver Thomas Inc. All rights reserved. 1400011-20 03/2020

Note: 1. Explosion proof motor (CSA,UL) is Class I, Groups C&D and Class II, Groups F&G. VACUUM REGULATOR WITH DIAL GAUGE CAT. NO. 2090K-05 Chemical resistant, vacuum bleed valve regulator with dial vacuum gauge to vary vacuum level to maximum vacuum of pump. Use with cat. nos. 2090W-01 and 2085W-01. NW25 connections. Please check out all our brands for your mission-critical flow control technologies: TRICONTINENT by Gardner Denver ZINSSERANALYTIC by Gardner Denver Syringe Pumps Vacuum Pumps & Systems