Model AP-20S Gas Detection Pump Kit Back Catalog number: 830-0001-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended TE-21 Teflon Bag, On-Off Valve (1.2L) Price on request 6075-0410-25 SCR-PHIL PAN-HD4-40 X 5/8 (Sold in pack of 25) Price on request 200263 LFS WHITE BAND VALVE ( EACH) Price on request