Using Monument Hand Bellows, air may be carefully pumped into the pipe. Fitted with a positive, hand operated non-return valve. Designed for use with Monument Air testing U Gauge kit. https://elecena.pl/product/27211924/monument-179o-179-hand-bellows 2024-11-10 https://elecena.pl/product/27211924/monument-179o-179-hand-bellows 2025-03-22 https://elecena.pl/product/27211924/monument-179o-179-hand-bellows 2026-01-03 https://elecena.pl/product/27211924/monument-179o-179-hand-bellows 2026-05-22 https://elecena.pl/product/27211924/monument-179o-179-hand-bellows 2026-07-07 https://elecena.pl/product/27211924/monument-179o-179-hand-bellows 2026-09-16