SPECIFICATIONS FEATURES
Size & Model 20~32 NVD 40~65 NV 1. Water ring type which performs well even if liquid is
Temperature Air - 10°C~50°C mixed with air.
Maximum
vacuum rate - 700mmHg 2. Rotary type with no contacting parts except for
(When feed water is 15°C) bearings and shaft seal provides for efficient operation
Structure :
System Water ring Water ring and maintenance, with less chance for malfunctions.
Shaft seal Mechanical Seal Packing 3. Great flexibility permitted for layouts due to compact light
Bearing Sealed Ball Sealed Ball
(inside motor) weight construction.
Connection Special Flange JIS 10kgf/cm2 4. Stable operation possible under high vacuum conditions.
(thin type)
Materials 5. Type NVD combines pump and feed water tank in one unit
Casing Cast Iron Cast Iron so that water is automatically supplied to the vacuum pump
Rotor Bronze Bronze
Shaft 403 stainless steel 403 stainless steel to reduce noise.
Motor Also available, an exclusive feed water tank for Type NV.
Number of
2 Poles 4, 6 Poles