Page 33 - ExpansionJointsCatalog2010

Protecting Piping And

Equipment Systems

From Stress/Motion

™

300

SERIES

flanged rubber pipe connectors

PROCO Series 300 Rubber Pipe is designed for tough demanding industrial and commercial applications as found in:

Chemical-Petrochemical and Industrial Process Piping Systems, Power Generating Plants, Steel Mills, Marine Services,

Pulp/Paper Systems, Water-Waste/Water-Sewage and Pollution Control Systems. Specific equipment applications could

include: Pumps, Cooling Towers, Compressors, Blowers, Fans, Absorption Machines, etc. Installed next to mechanical

equipment or between the anchor points of a piping system, specify the PROCO Series 300 to: (1) Isolate Mechanical

Vibration, (2) Reduce System Noise, (3) Absorb Pipe Movement/Stress, (4) Compensate Alignment/Offset, (5) Eliminate

Electrolysis, (6) Protect Against Start-Up/Surge Forces. When you need an engineered rubber solution to a piping system

problem, call PROCO.

Engineered For Your Application.

Each PROCO Series 300 Rubber Pipe is constructed with

a smooth interior tube specially compounded from an elastomer that satisfies the Chemical-

Abrasion-Sound requirements of your application (See Table 2). Multiple plies of tough fabric

and helical spring steel wire are embedded into the pipe wall during the manufacturing pro-

cess to provide a product designed for your pressure and vacuum requirements. Available

styles include:

Style 310-R:

Precision molded to specific lengths as listed in Table 3. The built-in rubber

flanges are drilled to ANSI - 125/150#.

Style 310:

Manufactured by conventional methods which allow for fabrication to a spe-

cific length requirement, in addition to lengths as shown in Table 3. Standard with 125/

150# drilling, the Style 310 can also be fabricated to meet other drilling patterns.

Style 320:

Designed for high pressure applications (See Table 4); this connector manu-

factured similar to Style 310. Flanges are usually drilled to ANSI 250/300# with other

drilling patterns furnished on request.

Style BE-310:

This beaded-end design features a rotating floating metallic flange for fast

perfect bolt hole alignment without torsion in new and old installations.

Only available in

optimum length sizes as shown in Table 3.

Absorbs Pipe-Wall and Fluid-Borne Noise.

The PROCO quiet-operating Series 300 is a

replacement for “sound transmitting” metallic connectors. Compare the Acoustical Im-

pedance ratings of rubber and other materials, as shown in Table 1. Pipe-Wall sound is

absorbed as the noise carried by the piping both enters and leaves the rubber section.

Connector length further influences absorption as sound loses energy traveling axially

through the rubber. For optimum lengths, see Table 3. Fluid-borne noise is absorbed by

the volumetric expansion (breathing) of the connector. This action cushions water ham-

mer, and smoothes out pumping impulses.

Isolate Vibrations and Motion.

Vibration originating from mechanical equipment is ab-

sorbed by the PROCO Series 300. Rubber pipe 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 perfor-

mance the pipe connector should be installed horizontally and parallel to this shaft. While

PROCO Series 300 Rubber Pipe will accept some axial motion, it is principally designed to

accept transverse motion. When installed at right angles to the direction of the pipe mo-

tion (movement), PROCO rubber pipe connectors can absorb large amounts of expan-

sion. For major two-plane vibration/motion it is best to use two flexible rubber pipe con-

nectors installed at right angles, one to absorb the horizontal vibration and one to absorb

the vertical vibration. A tension anchor is usually advisable to stabilize the elbow between

the connectors.

Note: For maximum vibration transmission reduction, the piping sec-

tion beyond the rubber connector must be anchored or sufficiently rigid.

Prevents Electrolysis and Electrolytic Action.

In chemical applications when metallic

connectors are used, they are generally of a metal dissimilar from the pipe-line. This

could create an electrolytic galvanic action that could be destructive to the connector,

equipment or piping system. The use of the PROCO Series 300 eliminates this potential

hazard. Additionally, because the all-rubber connector eliminates metal-to-metal contact

at the flange face, electrolysis is stopped.

Systems Misalignment Compensation.

In a rigid piping system, the installation of the

PROCO Series 300 Rubber Pipe adds a flexible component that is automatically self-

correcting for misalignment created by structural movements caused by settling, expan-

sion or ground shifts (See Table 3).

Chemical Or Abrasive Service Capability At Minimal Cost:

Expensive, exotic metal con-

nectors for chemical service can be replaced with the PROCO Series 300. Fabricated with

low cost chemical resistant elastomer such as: Chlorobutyl, EPDM, Gum, Hypalon

®

, Neo-

prene and Nitrile; insures a rubber connector compatible with the fluid being pumped or

piped (See Table 1). Our Gum or Neoprene products should be specified when handling

abrasive slurries. Use PROCO “Chemical to Elastomer Guide” to specify an elastomer for

your requirements.

F

LUID

S

EALING

A

SSOCIATION

INDEPENDENT

SEALING

DISTRIBUTORS

NATIONAL ASSOCIATION OF HOSE

AND ACCESSORIES DISTRIBUTORS

Product “cover” can be Hypalon® coated on special order.

Style 310/NN meets MIL-E-15330-D, Class A. Type III and conforms to all USCG requirements.

NOTES: 1. Hypalon is registered trademark of DuDont Dow Elastomers.

2. Teflon is a registered trademark of the DuDont Company.

3. Products with Teflon® “tubes” are not recommended with vacuum service.

NOTES: Acoustical impedance is defined as the product of material density times velocity of sound in

that material. In acoustical systems low impedance corresponds to low sound transmission.

Relative impedance is based on Rubber = 1.0

Material

Table 1: Comparison of Material Acoustical Impedances

Acoustical

Impedance

Lbs. / In.

2

Sec.

Sound

Velocity

In. / Sec.

Density

Lbs./In.

3

Relative

Impedance

Steel

206,500

.283

58,440

551.3

Copper

140,400

.320

44,930

423.9

Cast Iron

148,800

.260

38,690

365.0

Lead

49,800

.411

20,470

193.1

Glass

216,000

.094

20,300

191.5

Concrete

198,000

.072

14,260

134.5

Water

56,400

.036

2,030

19.2

Pine

132,000

.0145

1,910

18.0

Cork

19,200

.0086

165

1.6

Rubber

2,400

.0442

106

1.0

PROCO

Material

Code

*

BB

Chlorobutyl

250

°

Special II

*

BT

Chlorobutyl

Teflon®

250

°

Special II

*

EE

EPDM

250

°

Special II

*

NG

Neoprene

Gum

180

°

Std. I

*

NH

Neoprene

Hypalon®

212

°

Std. II

*

NN

Neoprene

225

°

Std. II

*

NP

Neoprene

Nitrile

212

°

Std. II

Table 2: Available Styles and Materials

For Specific Elastomer

Recommendations, See:

PROCO

™

“Chemical To Elastomer Guide”

F.S.A.

Material

Class

Maximum

Operating

Temp

°

F

Tube

Elastomer

Cover

Elastomer

310

310-R

BE-310

320