HDPE Electro Fusion Double Sealing Reducer Coupler

HDPE Electro Fusion Double Sealing Reducer Coupler, PN10 / PN16, PE100, to ISO 4427 / EN 12201, for PE water and gas networks.

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Category: HDPE Electro Fusion Fittings

HDPE Electro Fusion Fittings

Product Overview

The HDPE electro fusion double sealing reducer coupler joins two PE100 pipes of different diameters through two electro fusion sockets with a dual sealing design. The heating coils are moulded into both socket walls and energized by a standard electro fusion control unit, so the size transition becomes a monolithic PE100 junction with the same pressure rating as the larger pipe. Available from DN 50 to DN 315 mm with PN10 to PN16 ratings, the HDPE electro fusion reducer coupler is the standard choice for buried potable water networks where a leak tight size transition is required.

Quick Information

Material: PE100 (HDPE)
Joint: Electro fusion, double sealing on both ends
Function: Reduce and couple
Pressure rating: PN10 / PN16
Standard: ISO 4427 / EN 12201
Colour: Black

Specification Table

SDR17
SPECIFICATION	SIZE (mm)
	D1	D2	L1	L2	L
S32-25	35	43	45	47	100
S40-32	43	51	36	88	100
S50-40	52	63	43	57	105
S63-40	52	76	40	60	110
S63-50	62	79	46	60	115
S75-50	62	92	50	60	125
S75-63	79	92	52	60	125
S90-63	79	110	55	65	135
S90-75	92	110	55	65	135
S110-50	62	135	50	80	150
S110-63	79	135	50	75	145
S110-75	92	135	50	75	145
S110-90	110	135	57	75	145
S125-110	128	150	70	82	170
S140-110	130	163	65	90	175
S160-90	113	192	52	90	175
S160-110	135	192	60	90	175
S200-110	135	237	55	105	200
S200-160	194	237	70	105	200
S250-110	135	296	60	120	225
S250-160	194	296	80	120	225
S250-200	239	296	85	120	225
S315-160	194	373	90	130	265
S315-200	235	373	85	135	280
S315-250	299	373	100	130	265
S355-200	240	417	60	160	285
S355-250	295	417	100	160	300
S355-315	370	415	110	160	285
S400-315	370	472	110	160	315
S400-355	420	472	130	160	315
S450-400	471	523	120	173	315
S500-400	475	575	125	165	320

Key Features

Dual Sealing Sockets: Both sockets of the HDPE electro fusion reducer coupler use a double seal design, so even if one seal is scratched during assembly the size transition stays leak tight under pressure.
Concentric Reducer Bore: The bore steps down concentrically from the larger to the smaller socket, so flow stays centered and turbulence is minimized at the size change.
No Flow Ledge: The reducer bore is machined smooth, so there is no internal ledge to collect sediment or trap air at the transition.
One Piece Moulded Body: The reducer coupler is injection moulded as a single body, so there is no welded seam between the two socket sizes.
No Metal Insert: The electro fusion reducer coupler keeps polyethylene in the water path, so there is no corrosion or galvanic risk at the size transition.
Maintenance Free: The fused joints are permanent, so the HDPE electro fusion reducer coupler needs no bolts or gaskets to service at the transition point.

Production

Raw Material

The HDPE electro fusion reducer coupler is moulded from virgin PE100 compound rated MRS 10.0 per ISO 4427-3, with the resin lot recorded for full traceability from pellet to fitting.

Molding Process

Each electro fusion reducer coupler is injection moulded in one shot with both resistance coils pre positioned in the different diameter socket walls; the concentric reducer bore is machined after moulding to hold concentricity and eliminate any internal ledge.

Quality Control

Every batch of HDPE electro fusion reducer couplers is gauged for both socket diameters, ovality, coil resistance and bore concentricity, then sample welded and pressure tested to 1.5 times rated pressure before release; each fitting carries a batch code traceable to the raw resin lot.

Applications

Pump inlet size matching uses the HDPE electro fusion reducer coupler to step down from a buried HDPE main to a smaller pump nozzle without a bolted reducer.
Trunk to branch transitions install the electro fusion reducer coupler where a distribution main steps down to a smaller lateral, because the concentric bore keeps flow smooth at the size change.
Water treatment plant headers of different diameters connect through the HDPE electro fusion reducer coupler, so two header sizes join without a mechanical joint.
Retrofit connections between old and new pipe of different diameters use the electro fusion reducer coupler, because the double sealed sockets give a leak tight transition without gaskets.