Click to expand Tap to zoom Replacement Valve & Filter SKU: GK 3106 Save $-1.00 Inquire about this product × Inquire about a product Replacement Valve & Filter CPR Products Name Email Phone Number Product Inquiry Message Submit Inquiry Ships from Glenwood Laboratories ( Oakville, ON) Need help? Call us at (905) 825-8244. Learn about our Shipping & Returns Policy. Have a question? Read our FAQs. CPR Pocket Ventilator Replacement One Way Valve and Filter (99.2%).