Puddle Flanges

Black Puddle Flange / Long Spigot / PN16 / SDR11 / with optional Waterstop

Puddle flanges perform the same function as their Ductile Iron (DI) counterparts.  Designed for encasement in concrete, where PE passes through a structure (typically a concrete wall). Because PE is an 'end to end system' in respect to the transfer of forces (pressure, thermal and ground movement). A puddle flange design must withstand loads that exceed the ultimate tensile strength of the pipe meaning Pipe fails first in a tensile pull to failure.

For this reason, Mill-Pro puddle flanges are either injection moulded in PE100+ or machined from a single piece of extruded PE100+ hollow bar. They contain no welds or joints in the puddle area. (between the tapered sections).

In reclaimed land applications (for which PE is perfectly suited to), designers must consider to total lateral force that may be applied to a concrete structure, by the pipe pulling on the structure as it sinks with the settling ground. Click here for a more detailed presentation on settlement loadings.

Unlike DI, PE will not naturally form a leak-free seal when embedded into the concrete. PE expands when surrounded by mass concrete, due to the increase in temperature of curing concrete.  Once the concrete cools, the PE reverts to its original size leaving a small gap between the PE and the concrete, this gap allows water to pass both into or out of the structure.  

To prevent this a Hydrophilic vulcanized expansive rubber sealing ring is fitted to a groove in the puddles ring.  This Hydrophilic ring expands >600% when activated by exposure to moisture.  Hydrophilic sealing rings comply with ASTM D471 and must be kept dry in until they are installed and are supplied as standard.

NOTE: This product is not suitable for making pressure connections such as the base of a reservoir. Hydrophilic sealing rings are a water stop, not a pressure seal.  They are designed to expand into the surrounding structure and provide a barrier to groundwater ingress or egress typically found in chambers or structures, a few meters below ground level. 

Larger sizes can be found in our Wastewater sections.
AoR dimensions are available on request, please contact us.
non-Waterstop	with Waterstop	dn	t	W	D5	D4	L3	le	L	Availability in Hong Kong
P5316.138.125	P5316.938.125	125	11.4	20	AoR	157	50	150	420	6-8 weeks
P5316.138.180	P5316.938.180	180	16.4	21	AoR	225	50	150	421	6-8 weeks
P5316.138.250	P5316.938.250	250	22.7	29	AoR	313	50	250	629	6-8 weeks
P5316.138.315	P5316.938.315	315	28.6	36	AoR	394	50	300	736	6-8 weeks
P5316.138.355	P5316.938.355	355	32.2	41	AoR	444	82	300	805	6-8 weeks
P5316.138.450	P5316.938.450	450	40.9	52	AoR	563	104	300	860	6-8 weeks
P5316.138.500	P5316.938.500	500	45.4	57	AoR	625	114	350	985	6-8 weeks
P5316.138.560	P5316.938.560	560	50.8	64	AoR	700	128	350	1020	6-8 weeks
P5316.138.630	P5316.938.630	630	57.2	72	AoR	788	144	350	1060	6-8 weeks
P5316.138.710	P5316.938.710	710	64.5	81	AoR	888	162	350	1105	6-8 weeks
P5316.138.800	P5316.938.800	800	72.6	91	AoR	1000	182	350	1155	6-8 weeks

 

Puddle Flange / Butt Fusion / PN10 / SDR17 / with optional Waterstop

As above, however, machined to suit SDR 17 pipes with butt fusion ends for site butt welding. 

Above dn800, puddle flanges are supplied with fusion weld ends for factory joining to a pipe to reduce site welds. Long spigots versions are available on request.
Other sizes and SDRs are available on request, please contact us.
AoR dimensions are available on request, please contact us.
non-Waterstop	with Waterstop	dn	t	W	D5	D4	L3	le	L	Availability in Hong Kong
P2314.138.900	P2314.938.900	900	53.3	67	AoR	1045	134	100	535	6-8 weeks
P2314.138.1000	P2314.938.1000	1000	59.3	74	AoR	1161	148	100	570	6-8 weeks
P2314.138.1200	P2314.938.1200	1200	71.1	89	AoR	1393	178	100	645	6-8 weeks