Pipe and piping fittings
Polymer pipe, valves and fittings
Polymer type, joining method, temperature-derated pressure, thermal expansion and chemical compatibility must be considered as a complete system.
Type and construction
Available types
1
PVC pipe and fittings
View details2CPVC pipe and fittings
View details3PP pipe and fittings
View details4PE pipe and fittings
View details5PVDF pipe and fittings
View details6Polymer ball valve
View details7Polymer butterfly valve
View details8Polymer diaphragm valve
View details9Polymer check valve
View details10Polymer flange and adaptor
View detailsQuick comparison
How the main types differ in selection
TypePurposeBest suited toWatchpoint
PVC pipe and fittingsTransporting fluid or connecting process components within a pressure boundaryProcess, transmission, steam, water and utility linesDimensional standard, size, schedule, material, corrosion, manufacture and testing
CPVC pipe and fittingsTransporting fluid or connecting process components within a pressure boundaryProcess, transmission, steam, water and utility linesDimensional standard, size, schedule, material, corrosion, manufacture and testing
PP pipe and fittingsTransporting fluid or connecting process components within a pressure boundaryProcess, transmission, steam, water and utility linesDimensional standard, size, schedule, material, corrosion, manufacture and testing
PE pipe and fittingsTransporting fluid or connecting process components within a pressure boundaryProcess, transmission, steam, water and utility linesDimensional standard, size, schedule, material, corrosion, manufacture and testing
PVDF pipe and fittingsTransporting fluid or connecting process components within a pressure boundaryProcess, transmission, steam, water and utility linesDimensional standard, size, schedule, material, corrosion, manufacture and testing
Polymer ball valveFast isolation with a low-restriction flow pathServices requiring tight isolation and quarter-turn operationSeat compatibility, trapped cavity, torque and body-cavity pressure rise
Polymer butterfly valveIsolation or control with a compact quarter-turn designMedium and large sizes, water, utilities and many process servicesSeat design, offset, disc-to-pipe clearance and permitted velocity
Polymer diaphragm valveIsolation of the process fluid from moving parts by a flexible diaphragmChemicals, corrosive fluids or duties requiring clean containmentDiaphragm material and life, temperature, pressure and chemical compatibility
Polymer check valveAutomatic prevention of reverse flowProtecting pumps, compressors and lines where reverse flow is harmfulMinimum flow velocity, water hammer, mounting direction and closing speed
Polymer flange and adaptorCreating a detachable joint between piping, valves and equipmentLocations requiring assembly, inspection or periodic maintenanceStandard, class, material group, facing, gasket and bolting
Before selection
Information to define
- 1Polymer type
- 2Temperature-derated pressure
- 3Chemical compatibility
- 4Joining method
- 5Thermal expansion
Typical materials
PVC-UPVC-CPP-HPEPVDF
Typical connections
Solvent socketFusionSocket fusionFlangedThreaded
Typical media
WaterAcids and alkalisCorrosive fluids
Function
What does this family do?
Fluid transport and line construction
Building a dependable flow path between equipment and process units
Functional selection guideRouting, branching and mixing
Changing line direction, dividing or combining flow and creating branches
Functional selection guideJoining and sealing
Creating welded, threaded, flanged or mechanical joints with compatible sealing
Functional selection guideIsolation and shut-off
Full flow shut-off for operation, maintenance or process safety
Functional selection guideTechnical reference
Related standards
The exact edition and requirements must be checked against the project specification.
ISO 4427ASTM D1785ASTM F441
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Engineering note
This page supports initial screening and does not replace engineering calculations, project specifications, manufacturer approval or design pressure-temperature checks.
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