RUSKIN BTD830 Bubble Tight Isolation Damper Instructions

RUSKIN BTD830 Bubble Tight Isolation Damper

Specifications

• Product Name: BTD830 Bubble Tight Isolation Damper
• Operational Ratings:
  • Leakage Rating : Bubble Tight per AMCA 500-D
  • Maximum Velocity: 4000 FPM (20.3 m/s)
  • Maximum Pressure: 10 in.wg. (2.5 kPa)
• Design Features:
  • Description: Single-bladed damper for extremely low leakage
  • Frame: Painted Steel Channel
  • (Optional: 304(L)SS, 316(L)SS)
  • Flanges: Rectangular (Optional: Square Flanges)
  • Blade: Painted Steel; Round Center-Pivoted
  • (Optional : 304(L)SS, 316(L)SS)
  • Axle: 304SS (Optional: 316SS, 316LSS)
  • Bearing: 304SS Sleeve Bolted to Exterior of Frame
  • Axle Seal: Integral with Bearing Assembly
  • Blade Seal: Silicone, Mechanically Fastened to the Blade
  • Finish: Polyamide Epoxy (Optional: Mill 304(L)SS, 316(L)SS)
• Damper Sizes:
  • Minimum Size: 6 X 6 (152 X 152)
  • Maximum Size: 36 X 16 (914 X 406)

Product Usage Instructions

Installation

1. Ensure the damper is suitable for your rectangular/ square flanged installation.
2. Follow the provided guidelines for mounting the damper securely.

Operation

1. Operate the damper within the specified operational ratings for leakage, velocity, and pressure.
2. Maintain the damper seals and bearings as per the maintenance instructions.

Maintenance

1. Regularly inspect the damper for any signs of wear or damage.
2. Clean the damper components as needed to ensure proper functionality.

FAQ

• Q: Can the damper be used in pharmaceutical facilities?
  • A: Yes, the BTD830 damper is suitable for use in pharmaceutical facilities where extremely low leakage is required.
• Q: What is the maximum pressure the damper can withstand?
  • A: The damper can withstand a maximum pressure of 10 in.wg. (2.5 kPa).

APPLICATION

Ruskin’s single-bladed bubble-tight damper model BTD830 is designed for rectangular/square flanged installations in which extreme low leakage is required. Typical applications include industrial process exhaust systems, laboratories, pharmaceutical facilities, nuclear power plants, DOE facilities, military facilities, and biotech labs. Each damper model BTD830 is factory tested prior to shipment for leakage performance in accordance with AMCA Standard 500-D.

DAMPER SIZES

• Minimum Size : 6 X 6 (152 X 152)
• Maximum Size : 36 X 16 (914 X 406)

OPERATIONAL RATINGS

DESIGN FEATURES

OPTIONS

• Mounting Hole Patterns in Flanges (None, Front, Back, or both flanges)
• Factory-supplied & Mounted Actuators and Limit Switches

STANDARD CONSTRUCTION

Damper Height Inches (mm)| Frame & Flange Inches (mm)|

Blade Thickness Gauge (mm)

|

Axle Diameter Inches (mm)

---|---|---|---
Above| Through| Flange Width ‘F’ Inches (mm)| Gauge (mm)| Frame Depth ‘C’ Inches (mm)
≥ 6 (152)| 8 (203)|

2.0 (51)

|

12 (2.7)

| 8 (203)|

12 (2.7)

|

0.75 (19)

8 (203)| 12 (305)| 10 (254)
12 (305)| 16 (406)| 12 (305)

PRESSURE DROP INFORMATION

Leakage Performance – Each Sample is fully cycled and tested per AMCA 500-D-18, test fig. 5.8 – Test Standard for Bubble Leak Testing up to 10.0” w.g. (2.5 kPa) before shipment to ensure leakage satisfactory leakage performance is as expected.

• Performance Data – Sample tested per AMCA 500-D-18 Test Standard for Air Performance (Pressure Drop) for test figure: 5.5 (Bulkhead), 5.2 (Duct upstream) and 5.3 (Duct up amd downstream). Data
• Corrected to standard air density of 0.075 Ibm/ft3 (1.2 kg/m3)

12” X 12” Fig. 5.5

IP| SI Units
VD (fpm)| Δ PD (“w.g.)| VD (m/s)| Δ PD (kPa)
522.1| 0.024| 2.7| 6.0
1,450.6| 0.201| 7.4| 50.1
2,377.6| 0.529| 12.1| 131.8
3,307.5| 1.013| 16.8| 252.3
4,232.9| 1.644| 21.5| 409.5

12” X 12” Fig. 5.2

VD (fpm)| Δ PD (“w.g.)
523.3| 0.004
1,454.0| 0.033
2,383.2| 0.085
3,315.3| 0.158
4,242.9| 0.254
12” X 12” Fig. 5.3

VD (fpm)| Δ PD (“w.g.)
521.9| 0.002
1,450.1| 0.017
2,376.7| 0.044
3,306.2| 0.083
4,231.2| 0.132

MOUNTING ORIENTATION

• The damper to be installed with the axle in the horizontal plane

TYPICAL ACTUATOR MOUNTINGS (Optional)

MOUNTING HOLE PATTERN INFORMATION

Bolt hole pattern data shown on this page is for square and rectangular flanged dampers that represent standard construction. When clearly specified, Ruskin can provide nonstandard hole dimensions and patterns to meet customer requirements.

NOTES:

1. When H or K is one hole, locate the hole on the centerline.
2. To calculate “H” & “K” on the damper with standard construction (2” flanges):

Drop the decimal and add one (1) to determine the number of holes. example ……

SUGGESTED SPECIFICATION

Furnish and install, at locations shown on plans or in accordance with schedules, bubble-tight dampers meeting the following specifications: The damper shall be manufactured in an ISO9001-certified factory. Dampers shall be butterfly-type consisting of the square or rectangular blade, welded to a full-length axle within the flanged frame. The frame shall have a clean, smooth interior surface. Double skin blade design shall be a minimum of 12ga (3.5) thick steel and be complete with a solid silicone blade seal mechanically attached to the blade and field replaceable. The axle to be supported at each damper frame penetration by stainless steel sleeve bearings bolted to the damper frame and shall include an axle seal integral to the bearing assembly.

Each damper shall be individually tested for leakage in accordance to AMCA standard 500-D Bubble Leak Method test figure 5.8 with the closed damper blade subjected to 10 in. w.g. (2.5 kPa) a bubble solution is used to detect leaks. Bubbles not to exceed more than 1/16” dia. bubbles after 1 second and 1/4” dia. bubbles after 1 minute under pressure. Submittal data shall include Pressure Drop information based on Test Figure 5.3, 5.2, and 5.5 setup.

The basis of design shall be the Ruskin model BTD830.

LINKS TO IMPORTANT DOCUMENTS

Document Title
Limited Warranty Document

WARRANTY

• 3900 Doctor Greaves Road Grandview, MO 64030
• Website: www.ruskin.com
• Phone: 816-761-7476

ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION.

© Ruskin March 2024

References

• Ruskin Authority in Air Control, Fire / Smoke Dampers and Louvers

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