Proco Products, Inc. IOMSeries700R3 Page 3 of 13
1.0 Introduction
The Proco Series 700 ProFlex rubber check valves are designed to provide outstanding back-flow prevention; eliminating costly and
unwanted backflow from rivers, oceans, storm water, and is an excellent choice for sewage diffuser systems. The Proco Series 700 ProFlex
rubber check valves are fully passive flow devices requiring neither maintenance nor any outside sources of power or manual assistance to
operate. They are offered as direct replacements for ineffective and maintenance ridden flap-type check valves as well as for new/existing
construction and custom applications. Each check valve is manufactured to exacting specifications ensuring a perfect fit and usability and is
available in a wide variety of elastomers to meet the design requirements of the application. This installation, operation and maintenance
manual will cover the general practices for the proper installation, operation and maintenance of the Proco Series 700 ProFlex rubber check
valves.
1.1 Style 710/711: ProFlex Flanged Rubber Check Valve
This type of rubber check valve is designed to bolt directly to existing flanges or
new installations. Flanges are drilled to ANSI 125/150# standard but other drill
patterns are available upon request. This style of rubber check valve can be installed
in either vertical or horizontal applications. Available in a standard duck bill design
(Style 710) as well as an eccentric sloped bottom design (Style 711) for applications
requiring special installation clearances.
1.2 Style 720: ProFlex Flanged In-Line Rubber Check Valve
This type of rubber check valve is designed to fit directly inside of existing piping
systems. The design is supplied with a flat face rubber flange which allows
installation between existing pipe flanges eliminating the requirement for a valve
body. Flanges are drilled to ANSI 125/150# standard but other drill patterns are
available upon request. This style of rubber check valve can be installed in either
vertical or horizontal applications.
1.3 Style 730/731: ProFlex Slip-On Rubber Check Valve
This type of rubber check valve is designed to easily slip over an existing pipe and
is affixed to the pipe with heavy-duty stainless-steel clamps. This style of rubber
check valve can be installed in either a vertical or horizontal orientation for most
applications. Available in a standard duck bill design (Style 730) as well as an
eccentric sloped bottom design (Style 731) for applications requiring special
installation clearances. Note: External Clamp shown is of a general style and will
change depending on the size of the supplied check valve.
1.4 Style 740: ProFlex In-Line Slip-In Rubber Check Valve
This type of rubber check valve is designed to slip directly inside of an existing pipe and is supplied with a stainless-steel
expandable clamp to secure in place. This style of rubber check valve can be installed in either a vertical or horizontal
orientation for most applications.
Figure 4: Style 740
Figure 1: Style 710/711
Figure 2: Style 720
Figure 3: Style 730/731
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