Shop › Moose Valve Image 1 of 1 Moose Valve $45.00 The popular Moose Valve is a combination valve and water trap that is installed in the blowpipe stock. Add To Cart Added! The popular Moose Valve is a combination valve and water trap that is installed in the blowpipe stock. You Might Also Like Reed Protector Case $69.95 G1 Platinum Pipe Chanter Reed $24.95 Stock Stoppers $5.00 Mouth Piece Protector $3.00 Gibson Moisture Control $89.00