Dam, Reservoir and Hydropower Valves | Blackhall Engineering

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Larner-Johnson®
Flow Control Valve

Larner-Johnson Series 3137:
Inline-Regulating

Series 3168:
Pressure Sustaining

Size Range:
3" - 100";
DN15 - DN2500

Material:
Ductile iron,
Cast Steel &
Aluminium Bronze

Pressure Rating:
Up to 50 bar

Medium Velocity Discharge Capability:
Up to 12m/sec

Fixed-Cone Free
Discharge Valve

Larner-Johnson Series 3300
Size:
8" - 158";
DN200 - DN4000

Material:
Ductile iron,
Fabricated Steel &
Stainless Steel

Pressure Rating:
Up to 16 bar

High Velocity Discharge:
Up to 25m/sec

High Discharge Capacity:
k=1.7

Metal Seated
Parallel Faced Gate Valve

Metal Seated Series 3411
Size:
36" - 108";
DN900 - DN2700

Material:
Ductile iron

Pressure Rating:
Up to 26 bar

Medium Velocity Discharge Capability:
Up to 12m/sec

Submerged
Discharge Valve

Larner-Johnson Series 3200
Size:
8" - 80";
DN200 - DN2000

Material:
Ductile iron,
Cast Steel &
Stainless Steel

Pressure Rating:
Up to 20 bar

Medium Velocity Discharge Capability:
Up to 6m/sec

High Discharge Capacity:
k=1.62

Metal Seated
Wedge Gate Valve

Metal Seated Series 3400
Size:
24" - 72";
DN600 - DN2000

Material:
Ductile iron

Pressure Rating:
Up to 26 bar

Medium Velocity Discharge Capability:
Up to 10m/sec