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TM RE-221 REFA- 221 SERIES eccentric reducer expansion joints The PROCO Series RE-221 Rubber Eccentric Reducer Expansion Joint, often Absorbs Pipe-Wall And Fluid-Borne Noise. The PROCO quiet-operating Series RE-221 called a "Taper", serves as a reducing element to transition from one pipe sizeis a replacement for "sound transmitting" metallic reducers. Pipe-Wall sound loses en- to another. Eccentric in design, the rubber expansion joint body tapers on oneergy and is absorbed as the noise carried by the piping enters and exits the rubber side transitioning two different flange sizes. Eccentric Reducer Expansion Jointssection. Fluid-borne noise is absorbed by the volumetric expansion (breathing) of the are often located on the suction side of a pump to reduce cavitation. The PROCOconnector. This action cushions water hammer, and smooths out pumping impulses. Rubber Eccentric Reducer is engineered to replace metallic or rubber-lined Isolates Vibrations And Motion. Vibration originating from mechanical equipment is reducers used to provide unequal diameter connections of: piping and/or oper- absorbed by the PROCO Series RE-221. Rubber connectors should be installed right ating equipment applications such as: Pumps, Chillers, Cooling Towers, Com- after and ahead of the equipment generating the vibration, thus isolating the equipment. pressors, Blowers, Fans, Absorption Machines, etc. Installed next to mechani- Most machinery vibrates in a radial direction from the main shaft. For optimum perfor- cal equipment or between the anchor points of a piping system, specify the mance the PROCO connector should be installed horizontally and parallel to this shaft. PROCO Series RE-221 to: (1) Absorb Pipe Movement/Stress, (2) Reduce Sys- Vertical and perpendicular installations are also acceptable as the PROCO Reducer will tem Noise, (3) Isolate Mechanical Vibration, (4) Compensate Alignment/Offset, accept both axial and lateral movements and vibration. Installations of the Series RE-221 (5) Eliminate Electrolysis, (6) Protect Against Start-up/Surge Forces. The PROCO in a system enables isolated equipment to move freely on its vibration mountings. Note: Series RE-221 is engineered for tough, demanding, industrial and commercial For maximum vibration transmission reduction, the piping section beyond the rubber applications, as found in: Air Conditioning-Heating and Ventilating Systems, connector must be anchored or sufficiently rigid. Chemical-Petrochemical and Industrial Process Piping Systems, Power Gener- Chemical Or Abrasive Service Capability At Minimal Cost. Expensive, exotic metal or ating Plants, Steel Mills, Marine Services, Pulp/Paper Systems, Water-Waste- rubber lined reducers for chemical service can be replaced with the PROCO Rubber water-Sewage and Pollution Control Systems, where metallic reducers used in Reducer. Fabricated with low-cost chemical resistant elastomers such as: Chlorobutyl, conjunction with metal hose or expansion joints may have been previously used EPDM, Hypalon, Neoprene and Nitrile; insures a rubber connector compatible with the or specified. Our history in manufacture of expansion joint products dates back fluid being pumped or piped. (See Table 1) Our Neoprene, Natural/Gum and filled arch to 1930. PROCO Products is a member of the Rubber Expansion Joint Division, products should be specified when handling abrasive slurries. Use the PROCO "Chemi- Fluid Sealing Association. When a rubber expansion joint is needed to solve a cal to Elastomer Guide" to specify an elastomer for your requirement. piping system problem, call PROCO. Reduces System Stress And Strain/Compensate For Misalignment. Rigid attachment Traditional design when using a metallic reducer incorporates the use of a flexible ele- of piping to critical or mechanical equipment can produce excessive loading. Thermal or ment such as an expansion joint or metal hose to absorb the vibrations and movements mechanically created strain-stress-shock are cushioned and absorbed with the installa- of the system. The PROCO Series RE-221 Reducer combines the basic shape and tion of a flexible low "force-to-deflect" PROCO Rubber Reducer. The PROCO Style RE- dimensions of the metal reducer and the movement-sound reduction vibration-absorb- 221 adds a flexible component that is automatically self-correcting for misalignment ing features of a flexible element into one unit. Here are some of the many advantages: created by structural movements caused by setting, expansion or ground shifts. � Less System Installation Space: Flange And Retaining Ring Drilling. All PROCO rings are coated to prevent corrosion The PROCO RE-221 replaces a metal reducer and a flexible element. Thus lessand dimensionally drilled to ANSI 125/150# standards. In accordance with ANSI, all space is required and valves of other equipment can be more conveniently located.bolt hole pairs are "straddle" the center line. Hole drilling on center line, other drilling � Less Installation Cost: standards or materials such as: 304 or 316 Stainless and Bronze are available on special The PROCO RE-221 costs less then the metal reducer and flexible element that areorder. replaced. Additionally, standard joints (as listed in Table 1 and the "stock" section inLess Turbulence Or Material Entrapment. The molded integral flange of the PROCO Table 2) can be shipped same day as order placement. Rubber Reducer joins the body at a true 90 degree angle. Our product will install snug Engineered For Your Application: The PROCO Eccentric Reducer materials consist ofagainst the mating pipe flange without voids. Because this flange-body angle is difficult rubber and fabric which are formed and cured in a heated compression mold using anto form, many competitors severely radius this edge angle. The resulting void can create exclusive high-pressure press. The thick outer-cover and interior-tube are of an elas-flow turbulence, allow for material entrapment and/or bacteria growth. Avoid these prob- tomer especially compounded to satisfy the Chemical-Temperaturerequirement of yourlems by specifying PROCO. application. Available styles include: Exclusive Sealing Bead Means A Quick Seal. We have built an "O-Ring" on each � Style RE-221: flange-face of the Series RE-221. Available only from PROCO, our product seals faster Features one Open Arch for maximum movement, and good noise-vibration con-with less torque at installation and less long-term maintenance. For exclusive design trol. Our most popular style. (See Figure 1) features, specify PROCO. � Style-REFA-221: High Pressure With Full Safety Factors. We have assigned conservative pressure rat- Features one Filled Arch, is generally specified for slurry or abrasive services.ings to the Series RE-221. However, the ratings meet or exceed the requirements of the Provides noise and vibration control but less movement than Style RE-221. (SeeRubber Expansion Joint Division, Fluid Sealing Association, for Series A, B, and C. More Figure 2) importantly, our conservative ratings are fully tested and based on a minimum four-to- one safety factor. With competitive products the safety factor is often calculated or Table1: AvailableStyles� Materials �Temperatures� Stock unknown. For pressure protection, specify PROCO. For Specific Elastomer TM PROCO "Chemical to Elastomer Guide" Visit Our Website:http://www.procoproducts.com Recommendations, See: email: sales@procoproducts.com Style Numbers Type of Elastomer PROCOTM PROCOTM Maximum4 Branding F.S.A. Material Cover/ Tube/ Operating Label Material Code Outside Insi de Temp. �F Color Class S S /BB Butyl Butyl 250� Black Special II X X /EE EPDM EPDM 250� Red Special II X X /NH Neoprene Hypalon1 230� Green Standard II X7 X 7 /NN3 Neoprene Neoprene 230� Blue Standard II X X /NP Neoprene Nitrile 230� Yellow Standard II X X /NR Neoprene Natural2 180� White Standard I NOTES: 1.Hypalon is a trademark of E.I. DuPont Dow Elastomers 2.Filled Arch is Tan-Gum, Open Arch is Black-Natural. 3.Material NN meets all requirements of U.S.C.G. 4.In applications where pressure is less than 15 PSIG, temperature may be increased. 5.All products are reinforced with synthetic fabric plies. 6.Material Availability: X=Special Order, S=Standard Stock. 7.Certain sizes in stock, call for availability. 8.To Order, provide: 1. Size (I.D. x I.D. x Length), 2. Style Number, 3. Material Code.
Goodyear Rubber Products
