SS-4-6DD-4 - Stainless Screwed Bonnet Needle Valve 1/4" CBC Tube x 1/4" CBC TubeTylok SS 4 6DD 4 Stainless Screwed Bonnet Needle Valve 1 4" CBC Tube x 1 4" CBC Tube Valves are crucial to ensuring rapid shut off and preventing back flow. High pressure and low pressure valves are available depending on the given application. Tylok valves offer ease of maintenance, whether you're building OEM equipment or simply need to switch off flow to a subsystem when quarter turn, leak free use is critical. Select valves with PTFE seats and