“154578 Pentair Purex SMBW 4000 Filter Vent Tube Cap” has been added to your cart. Continue shopping Product Price Quantity Total × 154578 Pentair Purex SMBW 4000 Filter Vent Tube Cap $13.72 154578 Pentair Purex SMBW 4000 Filter Vent Tube Cap quantity $13.72 Cart totals Subtotal $13.72 Shipping Shipping costs will be calculated once you have provided your address. Total $13.72 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update