Page 27 - ExpansionJointsCatalog2010

™

Table 1: Available Styles • Materials • Temperatures

For Specific Elastomer

Recommendations, See:

PROCO

™

“Chemical To Elastomer Guide”

PROCO

™

Style

Number

Cover/

Outside

Type of Elastomer

Tube/

Inside

Maximum

Operating

Temp.

°

F

Branding

Label

Color

F.S.A.

Material

Class

251/BB

251/EE

251/NH

251/NN

251/NP

Butyl

EPDM

Neoprene

Butyl

EPDM

3

Hypalon

®

Neoprene

2

Nitrile

250

°

250

°

230

°

230

°

230

°

Black

Red

Green

Blue

Yellow

STD. III

STD. II

251

SERIES

wide-arch expansion joints

The PROCO Series 251 Wide-Arch Expansion Joint is interchangeable with and re-

places handmade spool-type and spherical expansion joints. Installed between the

anchor points of a piping system or next to mechanical equipment such as: Pumps,

Chillers, Cooling Towers, Compressors, Blowers, Fans, Absorption Machines, etc.;

specify the PROCO Series 251 to: (1) Absorb Pipe Movement/Stress, (2) Reduce Sys-

tem Noise, (3) Isolate Mechanical Vibration, (4) Compensate Alignment/Offset, (5)

Eliminate Electrolysis, (6) Protect Against Start-Up/Surge Forces. The PROCO Series

251 is engineered for tough, demanding, industrial and commercial applications, as

found in: Air Conditioning-Heating and Ventilating Systems, Chemical-Petrochemical

and Industrial Process Piping Systems, Power Generating Plants, Steel Mills, Marine

Services, Pulp/Paper Systems, Water-Wastewater-Sewage and Pollution Control Sys-

tems, where metallic joints/hose or old design rubber expansion joints may have been

previously used or specified. Our history in the manufacture of expansion joint prod-

ucts dates back to 1930. PROCO Products is a member of the Rubber Expansion Joint

Division, Fluid Sealing Association. When you need an engineered rubber solution to a

piping system problem, call PROCO.

In the early 1930’s, the U.S. Rubber Company invented the spool-type rubber expansion

joint. In 1968, the spherical-type rubber expansion joint was introduced by The Metraflex

Company. Today, most makers of expansion joints use similar designs for their standard

products. Both designs, spherical and spool-type, had certain strengths and weaknesses.

Combining the best design features of the sphere/spool-type with sophisticated manufac-

turing technology; PROCO has developed the Series 251 Wide-Arch Rubber Expansion

Joint. Here are some of the many advantages of our Series 251:

•

Greater Movements:

The Series 251 utilizes the spherical long flowing arch for

maximum movements, when compared to the narrow high arch of the spool-type de-

sign. Self-flushing, this arch is great for slurries and reduces turbulence; eliminating

the need for a “filled arch”.

•

Easier Sealing:

The Series 251 design utilizes the full-faced rubber/fabric flange of

the spool-type joint for a quick and sure seal at the flange when compared to the small

lip seal of the spherical design.

•

Less Weight:

The metal flanges of the spherical design are very heavy when com-

pared to the Series 251 with full-faced rubber flanges and retaining rings. Less weight

means less freight and ease of installation.

•

Looks Familiar:

From the outside, the Series 251 looks very much like the spool-

type joint your maintenance people have used for years. They are more comfortable

with the proven appearance of the spool-type when compared to the spherical-type.

High Pressure With Full Safety Factors.

The PROCO Series 251 pressure ratings meet or

exceed the requirements of the Rubber Expansion Joint Division, Fluid Sealing Associa-

tion, for Series A and B. More importantly, our conservative ratings are fully tested and

based on a minimum of four-to-one safety factor. With competitive products the safety

factor is often calculated, unknown and in one case a published three-to-one. For pressure

protection, specify PROCO.

Less Turbulence Or Material Entrapment.

The molded integral flange of the Series 251

joins the body at a true 90 degree angle. Our product will install snug against the mating

pipe flange without voids. Because this flange/body angle is difficult to form, many com-

petitors severely radius the edge angle. The resulting void can create flow disturbance,

allow for material entrapment or bacteria growth. You can avoid these problems by speci-

fying PROCO.

Absorbs Pipe-Wall And Fluid-Borne Noise.

The quiet-operating PROCO Series 251 is

a replacement for “sound transmitting” metallic expansion joints and hose. Pipe-Wall

sound loses energy and is absorbed as the noise carried by the piping both enters and

leaves the rubber section. Fluid-Borne noise is absorbed by the volumetric expansion

(breathing) of the connector. This action cushions water hammer, and smooths out

pumping impulses.

Isolates Vibrations And Motion.

Vibration originating from mechanical equipment is ab-

sorbed by the PROCO Series 251. Rubber connectors should be installed right after and

ahead of the equipment generating the vibration, thus isolating the equipment. As most

machinery vibrates in a radial direction from the main shaft, for optimum performance the

PROCO connector should be installed horizontally and parallel to this shaft. Vertical and

perpendicular installations are acceptable as the PROCO Wide-Arch will accept both axial

and lateral movements and vibrations. Installation of the Series 251 in a system enables

isolated equipment to move freely on its vibration mountings.

Note: For maximum vibra-

tion transmission reduction the piping section beyond the rubber connector must be

anchored or sufficiently rigid.

Chemical Or Abrasive Service Capability At Minimal Cost.

Expensive, exotic metal ex-

pansion joints for chemical service can be replaced with the PROCO Series 251. High

pressure molded with low-cost chemical resistant elastomers such as: Chlorobutyl, EPDM,

Hypalon

®

, Neoprene and Nitrile; assures a rubber expansion joint compatible with the

fluid being pumped or piped. (See Table 1) Our Neoprene products should be specified

when handling abrasive slurries. Use the PROCO “Chemical to Elastomer Guide” to specify

an elastomer for your requirement.

Reduces System Stress And Strain/Compensate For Misalignment.

Rigid attachment of

piping to critical or mechanical equipment can produce excessive loading. Thermal or

mechanically created strain-stress-shock are cushioned and absorbed with the installa-

tion of a flexible low “force-to-deflect” PROCO Rubber Series 251. The PROCO Wide-Arch

Joint adds a flexible component that is automatically self-correcting for misalignment cre-

ated by structural movements caused by settling, expansion or ground shifts.

Wide Service Range With Low Cost.

Engineered to operate up to 200 PSIG and 250

°

F,

the PROCO Series 251 can be specified for a wide range of piping system requirements.

Compared to competitive products, you will invest less money when specifying the engi-

neered design, industrial quality PROCO Wide-Arch Expansion Joint.

Large Inventories Mean Same-Day Shipment.

We maintain the largest inventory of elas-

tomer expansion joints in the Americas. Every size cataloged item is in stock in several

elastomers. We can ship your requirement when you need it. In fact, when it comes to

rubber expansion joints,

if PROCO doesn’t have your requirement … nobody does!

Information • Ordering • Pricing • Delivery.

Day or night, weekends and holidays …

the PROCO phones are monitored 24 hours around the clock. When you have a question,

you can call us. Toll-Free Phone ................. 800 / 344-3246 USA/CANADA

International Calls ............. 209 / 943-6088

Fax .................................... 209 / 943-0242

Email ................................ sales@procoproducts.com

Website ............................. www.procoproducts.com

Weekday office hours are 5:30 a.m. to 5:15 p.m. Pacific Time.

Notes: 1. Hypalon

®

is a trademark of DuPont Dow Elastomers, L.L.C.

2. Material NN meets all requirements of U.S.C.G.

3. In applications where pressure is less than 15 PSIG, temperature can be increased.

4. All products are reinforced with synthetic fabric and wire.

Rev. 03 6/99

Protecting Piping And

Equipment Systems

From Stress/Motion

Water Environment

Federation

®

Preserving & Enhancing

the GlobalWater Environment

M E M B E R

INDEPENDENT

SEALING

DISTRIBUTORS

NATIONAL ASSOCIATION OF HOSE

AND ACCESSORIES DISTRIBUTORS