MSABEK Push Fit Joint Pipe

For Water, Sewage or Other Liquids

MSABEK Push Fit Joint Pipe in sizes 4?-64? for water, sewage or other liquids has the proven long-life and high-strength qualities inherent in pipe produced centrifugally in accordance with AWWA C151. In addition, this significant AMERICAN development, a dependable, single gasket, push-on type joint meeting the requirements of AWWA C111, affords the customer lower joint cost and time- saving advantages in installation. It provides exceptional strength and flexibility and has been widely accepted by engineers, contractors and utility officials since the 1950s. For added flexibility during construction, and for possible elimination of bends, a liberal 5? allowable deflection is standard in all sizes through 30?, offering 21? offset in a 20? length of pipe. Liberal deflection can also be provided in larger diameter pipe with standard and Special Push Fit Deflection Bells.

The patented MSABEK Push Fit Joint embodies many advanced design features and is rated for a water working pressure of 350 psi. For specific conditions, ductile iron piping with this joint has been approved for much higher pressure conditions. The socket, which is scientifically designed with two gasket recesses and a dividing buttress, is manufactured to close tolerances so that the gasket is self-centered, securely confined, and firmly compressed for a permanent, tight, trouble-free joint. The Push Fit joint seal, bubble- tight under vacuum and external pressure, becomes even tighter with the application of internal pressure due to a specially designed wedging surface in the socket.

Push Fit Joint Assembly

The bell opening is slightly tapered to pro- vide easy entry of the pipe end; the flared socket design permits liberal joint deflection. The plain end of the pipe is tapered or rounded to facilitate entry into the bell and self-centering in the gasket. On pipe cut in the field, the plain end can be easily beveled and smoothed by the use of a portable grinding wheel or other suitable apparatus.

A stripe is painted on the plain end of MSABEK Push Fit Joint Pipe to provide a visual means of checking the joint alignment and to assure proper insertion.

Push Fit Gasket

The Push Fit Joint sealing component a molded synthetic rubber ring gasket of two hardnesses, shaped to fit the configuration of the gasket socket?is manufactured per all requirements of ANSI/AWWA C111/ A21.11 and under MSABEK?s own rigid specifications, assuring closely controlled dimensional and

hardness properties. The smaller end of the gasket is of harder rubber, approximately 85 durometer hardness, which provides a strong shoulder for self-centering on the gasket but- tress, a permanent seal against cold flow, and protection from deterioration. The larger end of the gasket is of softer rubber, approximately 65 durometer hardness, providing ease of assembly and positive sealing. The design assures effective sealing at low or high pressures and in straight or deflected joint alignment. It also eliminates any concerns of infiltration or root intrusion, and assures positive sealing against negative pressure, thus preventing gasket ?pullout? should a vacuum be created in the line.

A taper on the inside of the gasket allows the entering pipe to locate and center on the hard section and reduces friction loads during subsequent assembly. The snug fit and the hard section of the gasket, in conjunction with the design of the buttress, act to restrain the gasket against dislodgment during assembly. Additional internal pressure results in increased tightness of the seal when pipe is either in straight alignment or deflected.

Gaskets made of SBR (Styrene Butadiene Rubber) are standard. For information on gaskets made of special types of rubber, for applications involving air or liquid temperatures in excess of 150?F, or for chemical, hydrocarbon or other special service applications, and for installations in contaminated soils where permeation through gaskets might be a concern, consult MSABEK for recommendations.

Push Fit Lubricant

MSABEK Push Fit Joint Lubricant is a non-toxic water soluble material imparting neither taste nor odor to the conveyed water and is ANSI/NSF 61 approved. The lubricant is suitable for use in hot or cold weather and will adhere to wet or dry pipe. MSABEK Push Fit Joint Pipe can be assembled when submerged, though for such installation, special MSABEK underwater joint lubricant is recommended.

Push Fit Joint Materials

Standard joint materials include Push Fit plain rubber gaskets and a sufficient supply of Push Fit joint lubricant. Push Fit pipes are most often readily joined with available excavating equipment; however, assembly tools can be supplied by MSABEK on a loan basis with a nominal deposit which is refundable upon return of tools in good condition.

Coating and Lining

MSABEK Push Fit Joint Pipe can be furnished asphaltic coated, cement lined, or with special coating or lining where required.

Joint for Ductile Iron Pipe Dimensions

*Dimensions subject to change at our option.

Joint Deflection

Joint for Ductile Iron Pipe Allowable Joint Deflection

Size in.

Nominal Laying Length

Maximum Recommended Deflection?

Standard Bell Special Deflection Bell

ft.

X

Offset per Nominal Length in.

Y

Deflection Angle

Radius

of Curve* ft.

X

Offset per Nominal Length in.

Y

Deflection Angle

Radius

of Curve* ft.

*Approximate radius of curve produced by a succession of nominal lengths of pipe fully deflected.

?Special Deflection Bells must be specifically ordered and will be marked with white bell face for easy identification. For easiest assembly, the joints should be assembled with the pipe in reasonably straight alignment. After joint assembly, the pipe may be deflected up to the maximum shown above. Offset distances are based on 20-ft lengths.