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NCA Series 800C - Heavy Duty Shut-off Dampers

Verified by manufacturer 5 months ago

Circular Spigotted

HVC Supplies Variant:

Heavy-duty shut-off dampers for demanding applications.

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Application

Suitable for heavy duty, demanding applications requiring:

  • Low leakage rates.
  • Suitability for high airflow velocities.
  • Minimal resistance to airflow.
  • Large single section sizes.

Description

Designed to satisfy the most demanding applications, the S800C heavy duty shut-off damper is a robust, low leakage unit.


Features and benefits:

  • Low leakage rates are assured by the fully sealed design, making use of silicone rubber blade edge seals, stainless steel side seals and EPDM rubber stop gap seals. 
  • Heavy duty design for high velocity applications.
  • Aerodynamic extruded aluminium aerofoil blades for minimal pressure loss when open.
  • Large single section sizes are possible thanks to the low torque characteristics of the drive system. Single units available up to 2 x 2 m, driven from a single actuator.
  • Square, circular and flat oval connections for all types of ductwork.
  • Variety of control options including comprehensive range of actuators.

General information

Color

Grey

Guidance for specification option:

Bare metal.

Finish

Galvanized

Zinc plated

Mill

Material

Steel

Aluminium

Rubber

EPDM

Shape

Square

Circle

Oval

Length

180 mm

Manufacturer guidance

Overall depth.

Width

Bespoke

Height

Bespoke

Warranty description

One year

Uniclass

Pr_65_65_24_78 Shut-off dampersPrimary

CAWS

U90/440 Dampers, automatic

Specification data - Shut-off dampers

Standard

To BS EN 1751.

Leakage through closed blades

Class 2.

Casing leakage

Unclassified.

Material

Galvanized steel.

Control method

Extended spindle.

Guidance for specification option:

Standard - not with inboard actuator.

Locking quadrant.

Guidance for specification option:

Optional - not with inboard actuator, consult manufacturer for details.

Factory fitted electronic pneumatic actuators.

Guidance for specification option:

Optional - consult manufacturer for details and insert requirements.

Factory fitted ATEX rated actuators.

Guidance for specification option:

Optional - consult manufacturer for details and insert requirements.

Manufacturer guidance

Consult manufacturer's literature for details.

Operation

Opposed blade, linkage driven.

Connection

Circular spigotted.

Manufacturer guidance

Duct connection.

Dimensions

Guidance for specification option:

Insert requirements.

  • Minimum: 200 x 155 mm (nominal).
  • Maximum single unit: 2000 mm width, 2000 mm height or 2000 mm diameter (circular units done with spigot plate).
  • Consult manufacturer for details.

Component

Zinc plated steel.

Manufacturer guidance

Component material.

Blade

Extruded aluminium.

Manufacturer guidance

Blade material.

Seal

Silicone rubber, stainless steel and EPDM rubber.

Manufacturer guidance

Seal material.

OverallDepth

180 mm.

Flanges

40 mm.

Velocity

15 m/s.

Manufacturer guidance

Max recommended velocity.

TemperatureRange

-40 to +130°C.

Guidance for specification option:

Limited by EPDM stop gap seal.

Specification of an actuator may alter this range, consult manufacturer for details.

Sustainability data

Country of product manufacture

United Kingdom

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