hdpe-waterstop-1

HDPE Waterstop Gaskets

HDPE Waterstop is a rubber ring which is compressed around the pipe circumference using stainless steel clamps, preventing infiltration and exfiltration between the HDPE Waterstop and the pipe. It is then either grouted into an existing structure, or has a new structure poured around it.

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Features and Benefits

  • Provides better seal than mortar joint alone.
  • Can be used with existing structures, new precast structures, or new poured-in-place structures.
  • Easily adapts to field conditions.
  • Provides flexibility in installation.
  • Prevents infiltration/exfiltration between pipe and HDPE Waterstop.

How It Works

  • The rubber ring is placed so that it lies between two adjoining corrugations of the pipe
  • Stainless steel clamps secure the rubber ring to the pipe circumference.
  • The pipe is placed in position and grouted in place using non-shrink patching compound or;
  • The pipe is placed in position in the form work and the structure is poured around it.
  • After the mortar or concrete has set, the structure can be back filled.

This manhole connector meets or exceeds:

  • ASTM C923: Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
  • ASTM C1478 Standard Specification for Storm Drain Resilient Connectors Between Reinforced Concrete Storm Sewer Structures, Pipes and Laterals
  • ASTM F-2510: Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures and Corrugated High Density Polyethylene Drainage Pipes
TYPICAL TEST RESULTS for HDPE WATERSTOP (as in ASTM C 923 and C 1478)
TestASTM Test MethodTest RequirementsTypical Result
CHEMICAL RESISTANCE;
1N SULFURIC
ACID and 1N
HYDROCHLORIC ACID
D 534, AT 22ºC FOR
48 HRS
NO WEIGHT LOSS
NO WEIGHT LOSS
NO WEIGHT
LOSS
NO WEIGHT
LOSS
TENSILE STRENGTHD 4121200 PSI, MIN.1450 PSI
ELONGATION AT BREAKD 412350%, MIN.540%
HARDNESSD 2240 (SHORE A DUROMETER)±5 FROM THE
MANUFACTURER’S
SPECIFIED HARDNESS
<2
ACCELERATED
OVEN-AGING
D 573, 70± 1ºC
FOR 7 DAYS
DECREASE OF 15%, MAX.
OF ORIGINAL TENSILE
STRENGTH, DECREASE
OF 20%, MAX. OF ELONGATION
-13% TENSILE
CHANGE, -14%
ELONGATION
CHANGE
COMPRESSION TESTD 395, METHOD B, AT
70ºC FOR 22 HRS
DECREASE OF 25%, MAX.
OF ORIGINAL DEFLECTIO
13%
WATER ABSORPTIOND 471 IMMERSE 0.75
BY 2-IN.SPECIMEN IN
DISTILLED WATER AT
70ºC FOR 48 hrs
INCREASE OF 10%, MAX.
OR ORIGINAL BY WEIGHT
3.50%
OZONE RESISTANCED 1171RATING 0PASS
LOW-TEMP,
BRITTLE POINT
D 746NO FRACTURE AT -40ºCPASS
TEAR RESISTANCED 624, METHOD B200 LBF/IN. (MIN.)215 LBF/IN.
Download Specification

 

A rubber waterstop shall be employed in the connection of sanitary sewer or stormwater pipes to precast concrete or poured-in-place structures. The waterstop shall be HDPE WATERSTOP as manufactured by Press-Seal Corporation, Fort Wayne, Indiana, or approved equal. The waterstop shall be the sole element relied on to assure the seal of the pipe to the structure. The waterstop shall consist of a rubber gasket and two external take-up clamps.

The rubber gasket element shall be constructed solely of synthetic or natural rubber, and shall meet or exceed the physical property requirements of ASTM C-923, ASTM C 1478, and ASTM F 2510. Key lock and water stop shall extend into the concrete a minimum of 1.5-inches (38mm) to provide an adequate anchorage and watertight seal through the cast-in-place or grouted annular space. Nonshrink grout shall be placed around the entire waterstop and maintain a minimum thickness of 2-inches (50 mm) between the rubber gasket and structure opening to permit proper consolidation around the gasket.

The external take-up clamps shall be constructed of Series 300 non-magnetic stainless steel and shall utilize no welds in their construction. The clamps shall be installed by torquing the adjusting screw using a torque-setting wrench available from the connector manufacturer.

Selection of the proper size waterstop for the structure and pipe requirements shall be in strict conformance with the recommendations of the connector manufacturer. Testing of completed field joints, if required, shall be conducted in strict conformance with the requirements of the connector manufacturer.

The installed waterstop, pipe, and structure shall conform with the requirements of ASTM D 2321 paragraph 7.10 for Manole Connections.

MANUFACTURER12”
300mm
15”
375 mm
18”
450 mm
24”
600 mm
30”
750 mm
36”
900 mm
42”
1050 mm
48”
1200 mm
54”
1350 mm
60”
1500 mm
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