500 Atkomatic Product Selection Wizard The matrix number for your Atkomatic product is: 5 - (Place your mouse over characters in the matrix number to see a corresponding description.) Selection Items Thread Size: . 1/4" 3/8" 1/2" 3/4" 1" 1 1/4" 1 1/2" Maximum Differential Pressure: . 20 Psig 25 Psig 50 Psig 60 Psig 75 Psig 100 Psig 125 Psig 150 Psig 200 Psig 250 Psig 275 Psig 300 Psig Normal Position: . Normally Closed Normally Open Seat and Pilot Material: . TFE Pilot & TFE Disc Buna Pilot & Buna Disc Viton® Pilot & Viton® Disc EPDM Pilot & EPDM Disc Kel-F® Pilot & Kel-F® Disc Metal Pilot & Metal Disc Metal Pilot & TFE Disc Metal Pilot & Buna Disc Metal Pilot & Viton® Disc Metal Pilot & EPDM Disc Metal Pilot & Kel-F® Disc Voltage AC: . DC 24 VAC, 60 Hz 100 VAC, 60 Hz 115 VAC, 60 Hz 200 VAC, 60 Hz 230 VAC, 60 Hz 460 VAC, 60 Hz 110 VAC, 50 Hz 220 VAC, 50 Hz 380 VAC, 50 Hz Seal Material: . PTFE Buna-N Viton® EPDM Voltage DC: . AC 12 VDC 24 & 32 VDC 48 VDC 100 VDC 125 VDC 250 VDC Fluid/Media Type: . Gas Liquid, up to 40 SUS Liquid, 41 SUS to 150 SUS Steam (125 Psig Maximum) Cryogenic Coil Insulation Rating: . Class B (155° C) Class H (180° C) Coil Housing: . Standard (NEMA 1) Waterproof (NEMA 4) Explosion-proof (NEMA 7) Water- & Explosion-proof (NEMA 4 & 7) Connection Type: . NPT British Pipe Thread Options: . None Manual Opening Device Manual Throttling Device