NRSZ 3 rotary valves

Continuous emptying of the dust collector hopper.

The NRSZ type rotary valve is used to transfer material between two separate systems. In pneumatic conveying systems, discharge is usually required from the filter or cyclone to the silo, at atmospheric pressure. This is an ideal application for the NRSZ type rotary valve.

The rotary valve can be used for emptying of several non-adhesive material types, also combustible dust. Max. particle size for the NRSZ 3 is 3 x 3 x 10 mm (.1 x .1 x .4 in.)
The rotary valve should not work with highly abrasive dust.

The NRSZ rotary valve is made explosion pressure shock resistant. It prevents the transmission of the explosion effects, pressure wave, flame and sparkles until its maximum reduced explosion pressure Pred,Max. in both directions of the divided space with dangerous atmosphere of the flammable dust (except metal dust).
The rotary valve should not work with capacity more than 60% of max.

  • ATEX certified for St1 and ST2 dust.
  • Robust construction.
  • Effective air lock between the inlet and outlet provided due to the special rubber blades.

Technical data
Certifications CE, EX
Noise level (dB(A)) < 70
Installation Indoor, Outdoor
Material Galvanised steel plate
Suitable for combustible dust Yes
Application Dust
Operating Temperature Max. 70°C
    Rotary valve NRSZ3-7 RR, Ex D St2, II 1/2 D Ex II c IIIC T135° Da/Db

    ArtNo: 73008863

    Weight (kg)
    32
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 2,3 m3/h
    Rotary valve NRSZ3-0 RR, Ex D St2, T125°C, without motor

    ArtNo: 73009044

    Note
    Without motor
    Rotary valve NRSZ3-7 RR, Ex D St2, II 1/- D Ex II c IIIC T135° Da/-

    ArtNo: 73008862

    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 2,3 m3/h
    Rotary valve NRSZ3-7 RR, Ex D St2, II 1/3 D Ex II c IIIB T135° Da/Dc

    ArtNo: 73008864

    Weight (kg)
    32
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 2,3 m3/h
    Rotary valve NRSZ3-7 RR Ex D St2 II 1/- D Ex II c IIIB T135° Da/- AISI304

    ArtNo: 73009227

    Weight (kg)
    32
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 2,3 m3/h

Accessories for this product 1

Speed sensor NRS/Z/-3
ArtNo: 5507220

Speed sensor NRS/Z/-3