Nederman

NRSZ rotary valves, type 4,10,20,30

NRSZ rotary valves, type 4,10,20,30

Continuously empty combustible dust from your dust collector

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 NRS type rotary valve.

The rotary valve can be used for most material types, though the particle size must not exceed 13 x 13 x 13 mm (.5 x .5 x .5 in). The rotary valve should not work with highly abrasive dust.

The NRSZ type rotary valve is modular and robustly constructed in heavy steel plate. The rotor of each module is equipped with a clutch. This reduces the possibility of damage in use and maximises the life of the unit. The rotor has special rubber seals, which provide an effective air lock between the inlet and the outlet. The rotary valve should not work with capacity more than 60% of max.

This type of rotary valve is a certified version for explosive dusts type St1 and St2. The NRSZ is a protective system according to ATEX definition.

Explosive dusts type St1 may have Kst up to 200 bar m/s.

Explosive dusts type St2 may have Kst up to 300 bar m/s.

Technical data
Certifications CE, EX
Noise level (dB(A)) <70
Installation Outdoor, Indoor
Material Heavy steel plate
Suitable for combustible dust Kyllä
Application Dust
Operating Temperature Max. 70 °C.

Models19

    Rotary valve NRSZ4-0 RR, Ex D St2, 125°C, without motor (input dia30mm)

    ArtNo: 73008867

    Weight (kg)
    50
    Note
    Without motor. Capacity at 100% filling - 1,50m3/h per RPM
    Rotary valve NRSZ4-7 RR, Ex D St2, II 1/- D Ex II h IIIC T125° Da/-

    ArtNo: 73008868

    Weight (kg)
    75
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 10 m3/h
    Rotary valve NRSZ4-7 RR, Ex D St2, II 1/2 D Ex II h IIIC T125° Da/Db

    ArtNo: 73008870

    Weight (kg)
    75
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 10 m3/h
    Rotary valve NRSZ4-7 RR, Ex D St2, II 1/3 D Ex II h IIIB T125° Da/Dc

    ArtNo: 73008871

    Weight (kg)
    75
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 10 m3/h
    Rotary valve NRSZ10-7 RR, Ex D St2, II 1/- D Ex II h IIIC T125° Da/-

    ArtNo: 73008875

    Weight (kg)
    130
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 24 m3/h
    Rotary valve NRSZ10-7 RR, Ex D St2, II 1/2 D Ex II h IIIC T125° Da/Db

    ArtNo: 73008877

    Weight (kg)
    130
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 24 m3/h
    Rotary valve NRSZ10-7 RR, Ex D St2, II 1/3 D Ex II h IIIB T125° Da/Dc

    ArtNo: 73008878

    Weight (kg)
    130
    Power (kW)
    0,18
    Note
    Capacity at 100% filling - 24 m3/h
    Rotary valve NRSZ10-0 RR, Ex II D St2, T125°C, without motor (input ø35mm)

    ArtNo: 73008874

    Weight (kg)
    95
    Note
    Without motor. Capacity at 100% filling - 3,5 m3/h per RPM
    Rotary valve NRSZ10-20 RR, Ex D St2, II 1/- D Ex II h IIIC T125° Da/-

    ArtNo: 73008876

    Weight (kg)
    135
    Power (kW)
    0,75
    Note
    Capacity at 100% filling - 67 m3/h
    Rotary valve NRSZ10-20 RR, Ex D St2, II 1/2 D Ex II h IIIC T125° Da/Db

    ArtNo: 73008879

    Weight (kg)
    135
    Note
    Capacity at 100% filling - 67 m3/h
    Rotary Valve NRSZ10-20 RR, Ex D St2, II 1/3 D Ex II h IIIB T125° Da/Dc

    ArtNo: 73008880

    Weight (kg)
    135
    Note
    Capacity at 100% filling - 67 m3/h
    Rotary valve NRSZ20-0 RR, Ex D St2, 125°C, without motor (input dia35mm)

    ArtNo: 73008881

    Weight (kg)
    221
    Note
    Without motor. Capacity at 100% filling - 7 m3/h per RPM
    Rotary valve NRSZ20-20 RR, Ex D St2, II 1/- D Ex II h IIIC T125° Da/-

    ArtNo: 73008882

    Weight (kg)
    243
    Power (kW)
    0,75
    Note
    Capacity at 100% filling - 134 m3/h
    Rotary valve NRSZ20-20 RR, Ex D St2, II 1/2 D Ex II h IIIC T125° Da/Db

    ArtNo: 73008883

    Weight (kg)
    243
    Note
    capacity at 100% filling - 134 m3/h
    Rotary valve NRSZ20-20 RR, Ex D St2, II 1/3 D Ex II h IIIC T125° Da/Dc

    ArtNo: 73009037

    Rotary valve NRSZ30-0 RR, Ex D St2, 125°C, without motor (input dia35mm)

    ArtNo: 73008884

    Weight (kg)
    312
    Note
    Without motor. Capacity at 100% filling - 10,5 m3/h per RPM
    Rotary valve NRSZ30-20 RR, Ex D St2, II 1/- D Ex II h IIIC T125° Da/-

    ArtNo: 73008885

    Weight (kg)
    338
    Power (kW)
    0,75
    Note
    Capacity at 100% filling - 201 m3/h
    Rotary valve NRSZ30-20 RR, Ex D St2, II 1/2 D Ex II h IIIC T125° Da/Db

    ArtNo: 73009038

    Rotary valve NRSZ30-20 RR, Ex D St2, II 1/3 D Ex II h IIIC T125° Da/Dc

    ArtNo: 73009039

Accessories for this product 2

Rotation sensor for NRS with assembly kit
ArtNo: 73008689

Rotation sensor for NRS with assembly kit

Tool for setting the rotor in NRSZ4/10
ArtNo: 73008777

Tool for setting the rotor in NRSZ4/10