Flotec 0-25 LPM Oxygen Regulator for Large Cylinder (CGA540) with PTO part #rr510-300p2 Flotec 0-25 LPM Oxygen Regulator for Large Cylinder (CGA540) with PTO part # rr510-300p2 QUANTITIES LIMITED Part Number: LQ-34 Product Price $139.00 This product is no longer available.