John Guest PPSV500822WP Speedfit to Female Shut-Off Valve, Push-to-Connect, 1/4 OD x 1/4 NPTF Inch - Pipe Fittings - Amazon.com
Amazon.com: John Guest Style Quick/Fast Speedfit 1/4" x 1/4" inch for Reverse Osmosis RO JG Acetal Copolymer Push-To-Connect Tube Fitting, Union Straight Connector, Tube OD: Home Improvement
John Guest Speedfit PP480822W 1/4OD by 1/4NPTF Fixed Elbow, 10-Pack - Pipe Fittings - Amazon.com
John Guest Speedfit PP050821W 1/4OD by 1/8NPTF Stem Adapter, 10-Pack - Pipe Fittings - Amazon.com
Amazon.com: John Guest PP0208WP Push-fit Union Tee, Push-to-Connect, 1/4 Inch OD: Home Improvement
JOHN GUEST - 15MM EMERGENCY SHUT OFF TAP - Emergency Shut Off (SPEEDFIT Plastic plumbing push-in fittings): Amazon.co.uk: DIY & Tools