The Catalina Aluminum 30cuft. scuba cylinder is made of aluminum alloy and does not rust. A Pro-Valve is included with the cylinder. The Pro-Valve allows you to use a DIN or Yoke 1st stage regulator.
Thread Size: 0.750-14 NPSM
Working Pressure: 3000 psi
Great bottle, dove it twice and it looks like I’ve owned it for years. Perks of being an inspection diver I guess