Belco Brochure

FIBERGLASS DAMPERSAND BACKDRAFT DAMPERSFOR ODOR CONTROL AND CORROSIVEHVAC SYSTEMSBelco Fiberglass Dampers are manufactured to meet the needs of the odor control and corrosive HVAC industries by providing a corrosion-resistant FRP Damper that is used to regulate a gas flow or shut off and isolate a system. The operating conditions for the dampers are designed to match the operating conditions of the duct system. Premium vinyl ester resins are used throughout the damper. Fire-retardant resins are also available for a Class 1 flame spread.BELCO MANUFACTURING CO., INC. PROVIDES SEVEN DAMPER MODELS:Model 201 Used to control airflow for balancing a system. Model 201 is less expensive and has a shaft seal, but does not have a blade seal.Model 202 Used to control airflow for balancing a system. Model 202 has a shaft seal and full circumferential blade stop.Model 203 Used for isolating a system with low leakage. Model 203 has a shaft seal, blade seal, and a full circumferential blade stop. Designed for up to 30”.Model 204 Used for isolating a system, and has a PTFE encapsulated O-ring to provide a factory-tested watertight seal. Each model 204 damper is tested watertight before shipping.BELCO BACKDRAFT DAMPERSDesigned to prevent air from flowing back into the system when the fan is turned off. Backdraft Dampers are sometimes referred to as check valves.Model 301 & 302 (Vertical) Designed to open under air flow and close when air flow stops. Counterweight design for vertical run installation. Model 301 is for upward flow and Model 302 is for downward flow.Model 401 (Horizontal) Designed to close in the event of an interruption in air flow. Model 401 Backdraft dampers utilize a gravity operated counterweight to move the blade into a “closed” position when air flow stops. Model 401 Backdraft dampers have shaft seals but no blade seal.Dampers are often referred to by many different industry names. The adjacent chart may be used as a guide to determine the BELCO Damper model(s) you require. BELCO FIBERGLASS DAMPERS DAMPER NAMESINDUSTRY NAME BELCO MODEL EQUIVALENTCheck Valves 301, 302, 401Control Dampers 201, 202Volume Dampers 201, 202Butterfly Dampers 201, 202, 203, 204Shut-off Valves 203, 204Isolation Valves 203, 204Watertight Dampers 204 - WatertightBEARING4”O-RING SEALFRP HOUSINGFLANGE W/ BLINDFRP BUILD UPSECTION AB BDAMPER LENGTHS VARYBLADE STOPTO PREVENTOVER-ROTATIONBLADE STOPTO PREVENTOVER-ROTATIONI.D. = DAMPER SIZEBLADE SHAFTSECTION BADETAILADAMPER LENGTHS VARYBLADE SHAFTBEARINGI.D. = DAMPER SIZEDETAILMODEL 202 HAS A SHAFT SEAL AND FULL CIRCUMFERENTIAL BLADE STOP. MODEL 202 DOES NOT HAVE A BLADE SEAL. MODEL 201 DAMPER MODEL 202 DAMPERSECTION BI.D.=DAMPERSIZE ADETAILBEARINGAFRP BLADESECTION AB BBLADE SHAFTI.D.=DAMPERSIZEMODEL 201 HAS A SHAFT SEAL, BUT DOES NOT HAVE A BLADE STOP OR BLADE SEAL. MODEL 201 IS USED TO BALANCE A SYSTEM.BEARING4”O-RING SEALFRP HOUSINGFLANGE W/ BLINDFRP BUILD UPDETAILDAMPER LENGTHS VARYDAMPER LENGTHS VARY MODEL 203 DAMPER MODEL 204 DAMPEROPEN BEARING DETAILMODEL 203 HAS A SHAFT SEAL, BLADE SEAL ANDFULL CIRCUMFERENTIAL BLADE STOP. MODEL 203IS DESIGNED TO PROVIDE ISOLATION WITH A LOW LEAKAGE RATE TO 30” W.C.BEARINGFRP BUILD UPFRP HOUSINGFLANGE W/ BLINDO-RING SEAL316 SS BRACKET FORMOUNTING OPERATOR38"Ø HOLE FOR14"Ø BOLT (TYP 4)TEFLON BEARING4"DAMPERLENGTHS VARY SECTION BFRP BACKINGBLADE FRP DRIVEBLADEAADETAILI.D.=DAMPERSIZEDAMPERCONNECTION 6"MIN.8"MAX.BLADE BOLTS:14"Ø AT 4"-6" SPACINGTEFLON BEARINGBLADE SHAFT:SHAFT DIA’S6”Ø3 TP 30”Ø2 = 3/4”Ø32”Ø TO 58”Ø = 1 1/4”Ø60”Ø & LARGER = 2” Sch. 80SHAFT BOLT SIZE:1/4”Ø FOR 3/4“Ø SHAFT5/16”Ø FOR 1 1/4“Ø SHAFT3/8”Ø FOR 2”Ø SHAFTI.D.=DAMPERSIZESECTION AB BBLADE SEALDAMPERLENGTHS VARYDAMPERBLADESHAFTBLADE STOPTO PREVENTOVER-ROTATIONBLADE STOPTO PREVENTOVER-ROTATIONBEARINGFRPBUILD UPFRP HOUSINGFLANGEW/ BLINDO-RING SEAL4"SECTION BI.D.=DAMPERSIZESECTION ABLADE SHAFTFRP DRIVE BLADEBEARINGAAB BO-RING SEALDETAILI.D.=DAMPERSIZEFRP BACKING BLADEBLADE SHAFT:SHAFT DIA'S:6"Ø TO 30"Ø = 3 4"Ø32"Ø TO 58"Ø = 114"Ø60"Ø & LARGER = 2" Sch. 80DAMPER CONNECTION6"MIN.8"MAX.SHAFT BOLT SIZE:14"Ø FOR 3 4"Ø SHAFT516"Ø FOR 114"Ø SHAFT38"Ø FOR 2"Ø SHAFTBLADE BOLTS:14"Ø AT 4"-6" SPACINGDETAILMODEL 204 HAS A SHAFT SEAL. MODEL 204 ISDESIGNED FOR COMPLETE ISOLATION SERVICE.EACH 204 DAMPER IS TESTED WATER TIGHT.DAMPER LENGTHS VARYDAMPER LENGTHS VARY MODEL 401 HORIZONTAL BACKDRAFT DAMPER MODEL 301 & 302 VERTICAL BACKDRAFT DAMPERSSECTION BI.D. = DAMPER SIZEBACKDRAFTAIRFLOWNORMALAIRFLOW4"±1'-0"SECTION AI.D. = DAMPER SIZEBLADE STOPS -OBLATED BLADESSTOP AGAINSTSIDEWALLAXLEA ABBBOLT HOLESNOT SHOWNBLADE, TYP. 2AXLEBLADE, TYP. 2BLADE STOPBLADE STOPBLADE, TYP. 2I.D. = DAMPER SIZEAXLECOUNTERWEIGHTARM - 316SS 3 8"ØALL-THREADED RODADJUSTABLECOUNTERWEIGHTNUTSCOUNTERWEIGHT ARM -316SS 3 8"Ø ALL-THREADEDROD w/ ADJUSTABLECOUNTERWEIGHT NUTSBLADE AXLE, TYP. 2PLANSECTION1'-0"AXLEADJUSTABLECOUNTERWEIGHT NUTSCOUNTERWEIGHT ARM - 316SS38"Ø ALL-THREADED RODNORMALAIRFLOWBACKDRAFTAIRFLOWI.D. + 3"BLADEI.D.+3"AEND VIEWAXLEBEARINGACOUNTERWEIGHTARM - 3 8"Ø 316SSALL-THREADED RODBADJUSTABLECOUNTERWEIGHTNUTSEXTERNAL LINKAGEAXLEBSECTION B38"Ø 316SS ALL-THREADED RODADJUSTABLE COUNTERWEIGHT NUTSAIR FLOWEXTERNALLINKAGESECTION ABLADE SHAFT(TYP.)ØI.D.=DAMPERSIZEBLADE STOP112"AIR FLOWBLADESEE NOTE 54"112"VARIES 4"ROUND FLANGERECTANGULAR BLADECOMPARTMENTROUNDFLANGESUGGESTED SPECIFICATIONS FOR MODEL FRP DAMPERSFurnish and install at locations shown on plans, round FRP single-blade fiberglass dampers. Damper frame shall be of one piece construction with a resin rich interior corrosion barrier minimum of 100 mills. A structural lay-up shall consist of alternate layers of chopped strand mat and woven roving to conform to ASME/ANSI RTP-1 and ASTM D3982. The glass to resin ration shall be a minimum of 35% glass to 65% resin. Wall thickness, flange thickness, drilling pattern and width shall conform to ASTM D3982 Table 1. Exterior surface of the damper shall contain UV inhibitors and a gel-coat, color to match duct system. FLANGE FLANGE BOLT CIRCLE BOLT HOLE # OF BOLT BLADE EDGE AXLE FACE TO FACE SIZES THICKNESS O.D. DIA. DIA. HOLES THICKNESS DIA. LENGTH 6” 1/4” 10 3/8” 9” 7/16” 8 3/8” 3/4” 12” 8” 1/4” 12 3/8” 11” 7/16” 8 3/8” 3/4” 12” 10” 3/8” 14 3/8” 13” 7/16” 12 3/8” 3/4” 12” 12” 3/8” 16 3/8” 15” 7/16” 12 3/8” 3/4” 12” 14” 3/8” 18 3/8” 17” 7/16” 12 3/8” 3/4” 12” 16” 1/2” 20 3/8” 19” 7/16” 16 3/8” 1 1/4” 12” 18” 1/2” 22 3/8” 21” 7/16” 16 3/8” 1 1/4” 12” 20” 1/2” 24 3/8” 23” 7/16” 20 1/2” 1 1/4” 12” 24” 1/2” 28 3/8” 27” 7/16” 20 1/2” 1 1/4” 12” 30” 1/2” 34 3/8” 33” 7/16” 28 1/2” 1 /4” 12” 36” 1/2” 40 3/8” 39” 7/16” 32 1/2” 2” 15” 42” 5/8” 46 3/8” 45” 7/16” 36 3/4” 2” 15” 48” 5/8” 54 3/8” 52” 9/16” 44 3/4” 2” 15” 54” 5/8” 60 3/8” 58” 9/16” 44 3/4” 2” 15” 60” 5/8” 66 3/8” 64” 9/16” 62 3/4” 2” 18” 72” 5/8” 78 3/8” 76” 9/16” 60 3/4” 2” 24”Larger sizes are available. Contact a BELCO representative for more information. Model 401 dampers have different face-to-face dimensions.*Contact BELCO for specifications on other damper models.STANDARD CONSTRUCTIONResin System: Fire Retardant (FR) Blade: FR Vinyl Ester FRPVinyl Ester with MEKP Cure System Bearings: TeflonFrame: FR Vinyl Ester FRP Internal Hardware: 304 orAxle: 316 or 304 Stainless Steel 316 SSSizes: See Table Below Max System Pressure: 30’’ wgMax Operating Temp.: 200°F Connections: ASTM D 3982External Coating: Gel Coat with UV Table 1 for Standard Ductwork(White, Gray, or Tan) Gasket: EPDMFace to Face: See Table BelowActuator: Locking quandrant hand lever through 20” diameter, worm gear for larger than 20”. (Electronic, pneumatic, and chain-wheel operators are available).Options: Dampers can be made with a variety of resins, cure systems,gasket materials, shaft materials, internal hardware, external hardware,coatings, flange patterns, actuators, and face to face lengths. ContactBELCO Manufacturing for other available options. BELCO DAMPERS & BACKDRAFT DAMPERS*Typical end flange is ASTM D 3982 Table 1 dimensions and drilling for duct flanges. Two-hole pattern straddles principle centerlines. The damper blade shall be constructed of the same material as the damper frame and shall have a resin rich surfacing veil on both sides. Blade stiffeners shall be FRP or FRP encapsulated as required for stiffness. The axle shall be 304 or 316 stainless steel or pultruted FRP as required to meet corrosion resistance requirements. Leakage shall not exceed 3 cfm per square foot at 12” wc or 5.25 cfm per square foot at 30” wc as required in this specification for isolation. Damper shall be provided with stainless steel hand locking quadrant, gear operators, chain wheel operators, or other actuation devices as required in this specification. All interior metal shall be 304 or 316 stainless steel. Gaskets shal be EPDM. Other gasket materials shall be available upon request. All FRP fabrication shall meet or exceed quality requirements of ASTM D 3982 and ASME/ANSI RTP-1. Damper shall be Belco Manufacturing Models 201, 202, 203, 204, 301, 302, or 401.CUSTOM CONFIGURATIONS:BELCO dampers can be furnished in a variety of custom configurations including: extended length between flanges, undrilled flanges, inline dampers, either built into a section of duct or plain-end for field joint by installers. Damper Models 201, 202, and Backdraft Dampers can be furnished in rectangular configurations using our custom fabrications.AIR PERFORMANCE FOR BELCO MODEL 203 & 204 DAMPERSFULL OPEN POSITIONBELCO Manufacturing Company, Inc. certifies that the Standard Model 203 & 204 Dampers shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Program. The AMCA Certified Ratings Seal applies to air leakage and air performance ratings only. 1.) Test method per AMCA Standard 500-89 2.) Torque: 1049 in-lbs for 48” damper. 67.35 in-lbs for 6” damper 3.) Air leakage is based on operation between 50°F & 104°F LEAKAGE, L/s/m2 (ft3/min/ft2) REQUIRED EXTENDED RANGE PRESSURE RATING (OPTIONAL) CLASS 0.25 kPa 1.0 kPa 2.0 kPa 3.0 kPa (1” wg) (4” wg) (8” wg) (12” wg) 1A 15.2 (3) N/A N/A N/A 1 20.3 (4) 40.6 (8) 55.9 (11) 71.1 (14) 2 50.8 (10) 102 (20) 142 (28) 178 (35) 3 203 (40) 406 (80) 569 (112) 711 (140) CERTIFIED RATINGS AUTHORIZED BY AMCA0.0010.0100.1001.00010.000100 1,000 10,000Free Area Velocity (ft/min)PressureDrop(in wg)Model 203 - 12" RoundModel 203 - 24" RoundModel 203 - 36" RoundModel 204 - 12" RoundModel 204 - 24" RoundModel 204 - 36" RoundContact BELCO Manufacturing Company, Inc. for tested leakage rates. MODEL 203 ROUND DAMPERS MODEL 204 ROUND DAMPERS DAMPER DAMPER DIAMETER 6” - 48” DIAMETER 10” - 60” AMCA LEAKAGE CLASS AMCA LEAKAGE CLASS CLASS 1A CLASS 1 CLASS 1A CLASS 1 1” wg 4”wg, 8”wg, 12”wg 1” wg 4”wg, 8”wg, 12”wgWARRANTYBELCO Fiberglass Dampers are warranted for eighteen (18) months from the date of shipment to be free from defects in manufacturing, materials, or workmanship. Liability shall notexceed the purchase price of the damper and, at BELCO’s option, is limited to repair or replacement. BELCO Manufacturing Co., Inc. shall not be liable for any costs incurred either directly or indirectly other than repair or replacement of the product.Summary of testing as of 06-29-10.xls.MANUFACTURING CO., INC.2303 Taylors Valley RoadP.O. Box 210Belton, Texas 76513-0210Phone: 254-933-9000Toll Free: 1-800-251-Tank(1-800-251-8265)Fax: 254-939-2644Sales Fax: 254-933-3159E-mail: sales@belco-mfg.comwww.belco-mfg.com©2010 Belco, Inc. All rights reserved. “Belco” and the Belco logo are registered trademarks of Belco, Inc., Pub. No. BD-4 2010, November 2010, 5M, USA