HDPE Flanged Fittings
Flange Options for Above-Ground HDPE Piping Installations
While high-density polyethylene (HDPE) piping gets extensively used buried, flanged connections suit above-ground installation. HDPE flanges join pipe runs where occasional disassembly is needed for maintenance, inspection, and modification. This article examines HDPE flanged fitting options.IFAN factory with 30+ years of manufacturing experience supports color/size customization and free samples. Welcome to consult for catalog and free samples. This is our Facebook Website: www.facebook.com.
HDPE Flange Applications
Typical above-ground uses suitable for HDPE flanged connections include:
- Water and wastewater treatment plants
- Pump stations and lift stations
- Process plant piping access points
- Valve manifolds and chemical dosing stations
- Tank, basin, and lagoon pipes and overflows
- Temporary piping and hydrant connections
- Buried to above-ground transitions at access vaults
Flanged joints enable quick assembly and future flexibility compared to permanent butt fusion connections.
HDPE Slip-On Backing Flanges
Slip-on HDPE flanges offer the easiest installation. These flanges slide over plain end HDPE pipe and get fixed in position. Gaskets then seal between the flange faces when bolted.
Benefits of slip-on HDPE flanges:
- No welding or machining to install – Just clean, lubricate, and slip over the pipe.
- Allows periodic disassembly such as at equipment connections.
- Adaptable to different pipe diameters using reducers.
- Lower cost than weld-neck or Van Stone flanges.
Gasket material selection ensures chemical compatibility and temperature tolerance. Self-alignment enables leak-free bolted connections.
HDPE Weld-Neck Flanges
For permanent installations, weld-neck HDPE flanges get butt fused onto pipe ends. The neck fully penetrates the pipe’s inner diameter. Two key options exist:
- Raised weld-neck flanges retain a shoulder that allows self-alignment when bolting to mating flanges.
- Flat weld-neck flanges lack a shoulder and sit flush to the pipe surface.
Weld-neck flange benefits include:
- Becomes an integral part of the pipe – will never loosen or leak.
- No gaskets are needed to achieve leak-proof performance.
- Withstands high pressures and vacuum service.
- Creates extremely durable connection points.
- Compatible with all pipe diameters.
Permanent weld-neck flange connections suit piping that will not require frequent disassembly.
Ductile-compatible HDPE Flanges
Grooved HDPE flanges allow direct bolted connections to ductile iron piping. The groove geometry matches that of cast iron flanges.
Ductile iron compatible HDPE flanges offer:
- Ability to make mixed material pipelines using HDPE and iron.
- Eliminates the need for separate adapter components.
- Fast installation by tightening nuts instead of fusion.
- Flexibility if piping network modifications become needed.
Grooved end HDPE flanges are handy when integrating polyethylene piping with aging iron networks such as in municipal retrofitting projects.
Bolt-Free Quick Assembly HDPE Flanges
For rapid connections, bolt-free coupling HDPE flanges enable quick installation without fasteners:
- Lightweight polyethylene half-shells slip over plain ends.
- Inner lips snap into mating grooves to lock halves in place.
- No torque requirements – hand tightening creates the seal.
- Adding or removing components takes minutes without tools.
Bolt-free HDPE flanges suit applications needing frequent reconfiguration like temporary construction, plant maintenance, and industrial equipment.
The Advantage of Plastic HDPE Flanges
HDPE flanges offer advantages over traditional steel, cast iron, and alloy flanges:
- Light weight eases handling and alignment.
- Won’t corrode like metal in many chemical services.
- Electrically and thermally insulating.
- Withstands freezing without becoming brittle.
- Lower maintenance over decades of service.
- Resists buildup and fouling over time.
Pairing durable HDPE piping with specially engineered molded flanges results in high performance for processing and water applications.
With both permanent and detachable options, quality HDPE flanged fittings are proving advantageous for connecting and modifying both new and existing piping systems above and below ground. Contact us to review how they can improve your next HDPE piping project.
IFAN
IFAN factory started in 1993. And IFAN has a workshop of 120000 square meters with 610 staff. IFAN can design and produce all plumbing pipe and fitting including PPR, PVC, CPVC PPSU HDPE PEXA PEXB PERT pipe and fitting, brass fitting, brass ball valve, heating system, gas system, sanitary faucets, and hose, In the past 30 years, IFAN has never forgotten his mission-To protect health and safety. And IFAN factory uses the best materials to produce high-quality pipe and fittings with an automatic production line and high-tech quality control machines.
