Replacement Valve Caps (Pack of 2) Back Catalog number: 811-0920-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GH37 Housing, 37mm 3pc Opaque, 50/Box Price on request 810-0201-02 GilAir-3 Basic (ATEX), Pump only Price on request 811-0940-01-R Inlet Filter Replacement Housing for GilAir Plus Price on request