FX-EMF10 Mech Pumps Overview Edwards Style Filters Product Detail (Click to Enlarge) Overview Exhaust Filter: Edwards RV3, RV5 and RV8 pumps. Supplied with NW25 clamp, centering ring and ‘O’ ring, NW25 to 3/4 inch BSP adaptor. Order Part $372.00 USD per Unit Quantity View Cart