Robo Drain RD750 No-loss Drain Valve 750 PSI w/ Stainless Steel Vessel

The ROBO DRAIN RD750 is the ultimate, High Pressure, demand operated drain. The unit is fully automatic, no electricity is required. Its low profile gives you the advantage of installing it in areas where the vessel to be drained is only a few inches from the ground. A unique air valve design uses a magnetic force to ensure both a positive opening and closing that will prevent any air loss. The magnetic force is cleverly positioned away from the condensation level to prevent any attraction of metal particulate. An innovative ball valve support and positioning system prevents the sideloading problem which otherwise would cause premature sealing failure around the valve stem. 1/2" ball valve ensures that scale and rust will exit the vessel. The ROBO DRAIN RD750  will not clog ---- no strainer required.

Specifications

• Inlets: (2) 3/4" NPT
• Outlet: 1/2" NPT
• Power: Clean, Dry Compressed Air 80 to 130 PSI
• Pressure: 0 to 750 PSI
• Operating Temperature: 32° to 180° F.
• Weight: 23 lbs.
• Discharge: 24 Ounces per cycle.

Materials 

• Reservoir: 304 Stainless Steel
• Valve: Stainless Steel w/SS. Ball and Stem
• Float: Stainless Steel
• Seat: Stainless Steel
• Seal: Viton

How it works

Condensation enters through one of two ports. A stainless steel float rises with the level of condensation and positions a magnetic force over the valve housing. When the liquid level reaches the desired level, the magnet in the valve housing snaps upward and allows air to pass through a stainless steel seat. The air then moves to a nonlubricated air cylinder causing it to extend and open the ball valve. Condensation, scale and rust particles rapidly exit the unit. Before any air is lost, the float removes the magnetic force from the valve and the seat is covered with a Viton seal. A powerful spring returns the air cylinder to its normal position and rotates the positive closing ball valve back to its normally closed position. The pilot air used to actuate the air cylinder is isolated from the air in the drain's reservoir.