Zero-Leakage Air Isolation Frp Damper

V 1.5.4 Daniel Mechanical Company February 2006 DDaanniieell MMeecchhaanniiccaall CCoommppaannyy Phone: (909) 982-1555 Fax: (909) 982-18551939 West 11th Street Ste. E danmech@sbcglobal.netUpland, CA 91786 www.danielmechanical.com DDaannEELLAASSTT** ZERO-LEAKAGE AIR ISOLATION FRP DAMPER *Patent Pending V 1.5.4 Daniel Mechanical Company February 2006 DDaannEELLAASSTT RROOUUNNDD FFRRPP ZZEERROO--LLEEAAKKAAGGEE AAIIRR IISSOOLLAATTIIOONN DDAAMMPPEERR DANIEL MECHANICAL COMPANY offers precision-engineered fiberglass reinforced plastic zero-leakage DanELAST isolation dampers utilizing only high corrosion resistant parts for air movement and controls. Zero-leakage DanELAST dampers are fire retardant, corrosion resistant, and UV protected. All components are designed with replaceable parts that are easily disassembled for maintenance. The blade shafts are constructed of custom-milled, solid 316SST metal. Daniel Mechanical Company’s zero-leakage DanELAST damper utilizes a specially formulated elastomer with corrosion resistance equal to and/or superior to EPDM, Hypalon, and even Viton. No circumferential blade seals are required to achieve a full shutoff of the zero-leakage DanELAST isolation damper. This is largely due to the innovative design and expert hand craftsmanship of each key part. By constructing the unitary FRP blade to exact tolerances and without a commonly used circumferential blade seal, the weakest part of the damper is eliminated, thus improving its reliability. No blade stops are utilized, decreasing the pressure loss across the damper when in the full open position. Each zero-leakage DanELAST damper is factory tested to operating pressures exceeding 30 inches w.g. Leakage rates are tested using AMCA 500-D procedures, and the certified ratings are authorized by AMCA. The zero-leakage DanELAST damper blade is operated using a hand-wheel driven worm gear operator. Pneumatic, electric, or chain-wheel type operators are optional. Long life Teflon bearings and extensively tested molded plastic bushings accessible from the exterior of the damper require minimal maintenance and ensure unrestricted movement of the rotating shaft. All metal parts in contact with process air stream are at a minimum 316 stainless steel and may be manufactured of more exotic metals such as Hastelloy-C and Titanium. Zero-leakage DanELAST dampers enhance safety by providing greater isolation of process air during shutdown of low pressure exhaust system duct lines conveying hazardous air streams. When dealing with confined space entry conditions, use of zero-leakage DanELAST isolation dampers may reduce safety risks caused by contaminant air leaks. Zero-leakage DanELAST isolation dampers require far less maintenance, are more durable, and outperform conventional butterfly dampers. Zero-leakage DanELAST dampers range in sizes from 4-inch diameter to 120-inch diameter. SSTTAANNDDAARRDD CCOONNSSTTRRUUCCTTIIOONN FRAME—Vinyl ester resin fabricated to ASME/ANSI RTP-1 FLANGE—NBS PS 15-69-3.4.7 ¾” thick, hand lay-up integral to body per ASME RTP-1-2000 Standard Fig. 4-7. BLADE—Vinyl ester resin similar to damper frame. Unitary construction with no circumferential seal or backstop, having a calculated percent deflection of L/360 STIFFENERS—Same material as frame and integrally molded to blade SHAFT—316 SST with nuts, bolts, and washers (FRP encapsulated if required) SHAFT SEAL—Externally adjustable compression type with FRP housing and Viton O-ring BEARING—Teflon OPERATOR—Worm gear with hand wheel, chain wheel, pneumatic, or electric actuation GEL COAT—Paraffinated, with ultraviolet inhibitor COLOR—White unless specified otherwise MAXIMUM TEMPERATURE—200°F MAXIMUM PRESSURE—30” w.g. MAXIMUM LEAKAGE—Zero cubic feet per minute per square-foot of cross sectional area LUBRICANT—None requiredV 1.5.4 Daniel Mechanical Company February 2006 DDaannEELLAASSTT RROOUUNNDD FFRRPP ZZEERROO--LLEEAAKKAAGGEE AAIIRR IISSOOLLAATTIIOONN DDAAMMPPEERR DDEETTAAIILL DDRRAAWWIINNGG DDaannEELLAASSTT RROOUUNNDD FFRRPP ZZEERROO--LLEEAAKKAAGGEE AAIIRR IISSOOLLAATTIIOONN DDAAMMPPEERR DDIIMMEENNSSIIOONNSS SIZE FLANGE THICKNESS FLANGE O.D. BOLT CIRCLE DIA. BOLT HOLE DIA. # OF BOLT HOLES BLADE THICKNESS AXLE DIA. “A” “B” DAMPER WIDTH 4” ¾” 8 3/8” 7” 7/16” 4 3/8” ¾” 5” 6” 6” 6” ¾” 10 3/8” 9” 7/16” 8 3/8” ¾” 6” 8” 6” 8” ¾” 12 3/8” 11” 7/16” 8 3/8” ¾” 6” 8” 6” 10” ¾” 14 3/8” 13” 7/16” 12 3/8” ¾” 6” 8” 12” 12” ¾” 16 3/8” 15” 7/16” 12 3/8” 1” 6” 8” 12” 14” ¾” 18 3/8” 17” 7/16” 12 3/8” 1” 6” 8” 12” 16” ¾” 20 3/8” 19” 7/16” 16 3/8” 1” 6” 8” 12” 18” ¾” 22 3/8” 21” 7/16” 16 3/8” 1 ¼” 6” 8” 12” 20” ¾” 24 3/8” 23” 7/16” 20 3/8” 1 ¼” 6” 8” 12” 24” ¾” 28 3/8” 27” 7/16” 20 3/8” 1 ¼” 7.5” 8” 12” 30” ¾” 34 3/8” 33” 7/16” 28 3/8” 1 ¼” 7.5” 8” 12” 36” ¾” 40 3/8” 39” 7/16” 32 ½” 1 ¼” 7.5” 8” 12” 42” ¾” 46 3/8” 45” 7/16” 36 ½” 1 7/8” 7.5” 8” 12” 48” ¾” 54 3/8” 52” 9/16” 44 ½” 1 7/8” 7.5” 8” 12” 54” ¾” 60 3/8” 58” 9/16” 44 ½” 1 7/8” 10” 8” 12” 60” ¾” 66 3/8” 64” 9/16” 52 ½” 1 7/8” 10” 8” 12” 72” ¾” 79” 76” 9/16” 64 ½” 1 7/8” 12” 12” 18” “A”SEALESS PRECISION-SHAPED ELIPTICAL FRP BLADE WITH MOLDED STIFFENERS AS REQUIRED “B”EXTERNALLY ACCESSIBLE ADJUSTABLE COMPRESSION SEAL MADE OF FRP WITH VITON O-RING & TEFLON BEARING FRP STANDOFF PLATE HANDWHEEL WITH WORM GEAR OPERATOR ZERO LEAKAGE DAMPER BODYWITH EMBEDDED CORROSION-RESISTANT DanELASTTM ELASTOMER SEALING SEATFLANGE DIMENSIONS & BOLT HOLEPATTERN PER NBS PS 15-69TABLE IIFRP FLANGE INTEGRALTO BODY PER RTP1 STANDARD NOTES: 1. ALL KEY PARTS ARE DETACHABLE AND EASILY REPLACED WITH SPARE PARTS. 2. DAMPER SHALL BE FULLY OPERATIONAL AT TEMPERATURES UP TO 200º F. 3. DAMPER HAS A LEAKAGE RATING OF ZERO CFM @ 30” W.C. 4. ALL METAL PARTS IN CONTACT WITH PROCESS AIR STREAM ARE 316 SST. MORE EXOTIC METALS SUCH AS HASTELLOY-C AND TITANIUM ARE OPTIONAL. LEAK PROOFENCAPSULATING FRP HUBWITH TEFLON BEARINGTOP VIEW PATENT PENDING 316 SST CUSTOM MILLED CENTEREDSOLID SHAFT WITH 316 SST HARDWARE V 1.5.4 Daniel Mechanical Company February 2006 Daniel Mechanical Company certifies that the Model 303 dampers shown herein are licensed to bear the AMCA Seal. The ratings shown are based ontests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified RatingsProgram. The AMCA Certified Ratings Seal applies to air performance and air leakage ratings. Test method is per AMCA Standard 500-D-98 Figures 5.3, 5.4 Alternate-6.3, 5.5, & 5.6, 6.5. Data are based on a seating torque of chart listed in-lbsapplied to hold the damper in the closed position. Air leakage is based on operation between 50°F - 104°F. SSUUGGGGEESSTTEEDD SSPPEECCIIFFIICCAATTIIOONNSS FFOORR RROOUUNNDD FFRRPP AAIIRR CCOONNTTRROOLL DDAAMMPPEERRSS Operator shall be sized according to required operating torque. Operator shall be coated with corrosion resistant epoxy. All metal parts exposed to the air stream shall be 316 SST. All zero-leakage dampers located at elevations exceeding 6’-6” above finished floor shall, in addition to the hand wheel, be equipped with chain wheel sprockets and appropriately sized chain lengths, as manufactured by: Dampers are installed as shown on plans and per specifications. Damper frame shall be of one-piece construction with a resin rich interior corrosion barrier having a minimum thickness of 100 mils. A structural wall shall consist of alternate layers of chopped strand mat and woven roving to conform to ASME/ANSI RTP-1 and NBS PS 15-69. The overall glass and resin content shall be 40% and 60% by weight, respectively. 1. Babbitt, or equal The fiberglass flange dimensions shall be per NBS PS 15-69 Table 2 for dimensions and bolthole drilling pattern. The flanges shall have a minimum thickness of 3/4 inch and shall be constructed integral to the cylindrical body of the damper, using the hand lay-up technique per ASME RTP-1-2000 standard Fig 4-7. The distance between the faces of the flanges shall be 6 inches for dampers having a diameter size of 8 inches or less. For all other damper sizes, this distance shall be 12 inches long. The damper blade and stiffeners shall be fabricated using the same resin as the damper frame. The damper blade shall be of unitary construction having no detachable parts or circumferential or wiper blade seals. Damper blade shall be designed to prevent over-rotation without the use of backstops located anywhere in the air stream. 316 SST blade shaft shall be continuous, centered, and custom-milled to fit the operator. Both the damper blade and shaft shall be fully detachable from each other and readily disassembled from the damper body for easy repair or maintenance. Chain wheel sprockets shall have integral chain guides to prevent “gagging”. Annular DanELAST corrosion resistant elastomer sealing seat shall be embedded in the damper body to achieve zero leakage. Exterior surface of damper shall contain UV inhibitor, and be gel coated or painted with color to match existing ducting. FRP dampers shall be tested for pressure drop and leakage in accordance with AMCA Standard 500-D. AMCA 500-D leakage tests shall be performed by AMCA certified testing facilities. The leakage rate shall be a maximum of 0 C.F.M per square-foot of cross-sectional area at 30-inches w.g. pressure. The test results shall be submitted for review and approval by the Engineer. The zero-leakage damper shall bear the AMCA seal. Damper shall have an FRP structural stand-off bracket integrally laminated to the exterior of the body for mounting a worm gear operator. Approved manufacturer of zero-leakage isolation damper shall be: 1. Daniel Mechanical – Model: DanELAST 303 Damper shall be provided with a self-lubricated hand-wheel driven worm gear operator, as manufactured by: 2. Or equal 1. Dynatorque, or equal CCEERRTTIIFFIIEEDD RRAATTIINNGGSS AAUUTTHHOORRIIZZEEDD BBYY AAMMCCAA Blade Fixed Open Damper Diameter Torque inch lbs. Leakage Class ?P (in. wg) CFM 4” 66 1A - - 12” 891 1A 0.11 1,983 24” 486 1A 0.04 6,585 36” 360 1A 0.03 14,072 48” 464 1A - - 54” 630 1A - - 60” 866 1A - - 72” 360 1A - -