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Proco Style 442-BD

The Proco Style 442-BD Molded Expansion Joints can be used for corrosive applications that are found in industries such as chemical-petrochemical, industrial process piping systems, power generation plants, pulp/paper plants, water and wastewater sewage, and pollution control systems. This expansion joint features two convolutions for minimal movements, higher pressure/temperature ratings, and short face-to-face opening requirements. Wherever metallic joints, lap joints, or PTFE and FEP-lined rubber expansion joints were previously used, the Proco Style 442-BD can also be used.

Some notable features of the Proco Style 442-BD include:

  • Absorption of pipe-wall and fluid-borne noise
  • Reduction of system stress and strain
  • Isolation of mechanical vibration and motion
  • Superior “Flex Life” and strength
  • Tested force pound and spring rate tables
  • Coated flanges and factory set limit bolts
  • Chemical service capability at minimal cost
  • Elimination of electrolysis
  • Protection against start up and surge forces

For more information about the features and benefits of the Proco Style 442-BD, download our brochure.

For up-to-date pricing and availability information, contact PROCO today.

Nominal Size I.D.Neutral Length InchesMovement Capabilities Based on two Convolution Design¹Spring Rate Capability²Expansion Joint Flange DrillingPressure at Temperature (PSIG) @ °FVacuum Rating ³Weight/ lbs
±Axial(Δx)
Movement
Lateral(Δy)
Deflation
Angular DeflationCompression Spring RateExtension Spring RateLateral Spring RateThrust Factor# of HolesThread Hole SizeBolt Circle Flange “A”PTFE Flare O.D. “B”Flange ThicknessNominal Flange O.D.Limit Bolt DiameterBolt Circle Limit Bolt “C”Limit Bolt “EAR” O.D.
ININDEG.LB/INLB/INLB/IN70°100°150°200°250°300°350°400°Hg at Temp.
1.001.3750.250.1257104801042.7641/2- 133.1252.000.3134.250.2505.1256.000185170148130115100846829.9′ @ 425°F2
1.251.3750.250.1257611374002.2541/2- 133.5002.520.3944.630.2505.1966.8501851701481301151008468CF5
1.501.3750.250.12573201802244.6041/2-1 33.8752.875.3445.000.2505.8756.750185170148130115100846829.9′ @ 425°F3
2.001.5630.250.12575123002407.0745/8- 114.7503.625.4386.000.3756.8758.125185170148130115100846829.9′ @ 425°F7
2.502.2500.313.12574572783289.6245/8- 115.5004.125.5007.000.3758.1259.375185170148130115100846829.9′ @ 425°F10
3.002.2500.375.188764832031915.9045/8- 116.0005.000.5007.500.3758.75010.000185170148130115100846829.9′ @ 425°F10
4.002.6250.500.250748028040023.7585/8- 117.5006.188.6259.000.3759.87511.125185170148130115100846829.9′ @ 400°F18
5.003.2500.500.250744044032033.1783/4- 108.5007.313.75010.000.50011.50013.000185170148130115100846829.9′ @ 400°F24
6.002.7500.500.250744038644050.2483/4- 109.5008.500.75011.000.50012.50014.000185170148130115100846829.9′ @ 400°F29
8.004.0000.500.250745039048083.4983/4- 1011.75010.625.93813.500.50014.75016.25016415012911210087736029.9′ @ 250°F47
10.005.2500.500.2507760600580108.38127/8- 914.25012.7501.00016.000.50017.50019.00016415012911210087732229.9′ @ 250°F64
12.006.0000.500.25071300420700176.63127/8- 917.00015.0001.00019.000.62520.50022.000705948403530262229.9′ @ 75°F115
14.006.3130.750.375732010561256233.59121-818.75016.2501.18821.0001.42024.17227.313705948403530262210.0′ @ 212°F126
16.007.0001.000.375729710961256259.68161-821.25018.5001.18823.5001.42027.56331.500705948403530262210.0′ @ 212°F159
18.007.9381.000.375744019411370321.90161 1/8- 822.75021.0001.18825.0001.42029.00032.90670594840353026229.0′ @ 212°F174
20.009.0001.000.3757374.57201 1/8- 825.00023.0001.18827.5001.42031.50035.43870594840353026226.0′ @ 212°F183
24.006.3130.625.3757538.36201 1/4- 729.50027.2501.34432.0001.42035.90639.84470594840353026224.0′ @ 212°F238

NOTES:
1. Movements are non-concurrent and based from Neutral Length with Limit Bolts installed.
2. Spring Rate Capability is based on 1″ of movement at zero pressure conditions.
3. Vacuum Rating is based from fully extended position. CF = Contact Factory.

 

Series 442-BD
Description1″ Through 12″14″ Through 24″
BellowsPTFEPTFE 
FlangesDuctile IronZinc Plated Carbon Steel
Reinforcing RingsStainless SteelStainless Steel
Limit BoltsCarbon SteelCarbon Steel
NutsCarbon SteelCarbon Steel
GrommetsNeopreneNeoprene
WashersCarbon SteelCarbon Steel