Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Then venturi vacuum system uses a Schrader valve that is common to many BCs and is intended for large housings that would take a long time to pump down by hand. As a result, the cap is much taller to cover the valve. Example:
Nauticam M16 Dual Activation Vacuum Valve Compatible with QD Adapter [nau.25613] - $320.00 : Reef Photo & Video!, The Underwater Photo Pros
Nauticam M16 Vacuum Valve [nau.25612] - $220.00 : Reef Photo & Video!, The Underwater Photo Pros
Nauticam Vacuum Valves
Here is the form and prices for the sensor installation in the US:
http://reefphoto.com/forms/nauticam...il&utm_term=0_10680d01a0-7cc4982883-293933777