DELTAFLEX Convoluted Flanges

Improved Piping Products, Inc. (IPP) has patented the second generation convoluted pipe back-up rings and markets that technology under the registered trade name of IPP Deltaflex® Flanges. The unique design technology significantly reduces the weight of a flange without reducing its pressure performance.

 

Product overview IPP Deltaflex® Flange Engineering

The finite element analysis (FEA) tool utilized by IPP is ANSYS 5.3. Using these tools, the company has examined the stress levels inside standard piping flange joints and in the adjacent pipe walls. From this analysis, IPP has confirmed that nationally recognized pipe flanges are very conservatively stressed while the adjacent pipe walls often exceed allowable code stress values, in many cases approaching the yield point of the piping material.

 

 

 

In response to this IPP Deltaflex® flanges are designed to allowable code stress levels with a safety factor of 2. Even with this generous safety factor IPP Deltaflex® flanges are much lower stressed than the abutting pipe wall material. 
Therefore a properly selected IPP Deltaflex® flange is not the weakest link in a pipe system when the adjacent pipe wall is closely examined. 

 

IPP Deltaflex® flanges are safe, functional structures with an attractive economic dimension. They conserve material and energy resources from manufacture to point of installation. The lower weight translates into several benefits:

 

• lower cost of raw material and energy

• reduced transport costs

• ease of handling and installation

 

The IPP Deltaflex® flanges can be substituted for a conventional pipe flange as called out in DIN, ANSI B16.5, B16.47 and AWWA C207. Its unique cross section can save up to 40% of the weight of one of these national pipe standard flanges. Some installation practices have thinned the standard flanges for economic reasons. In these instances using IPP Deltaflex® flanges design principles can reduce the critically high stress levels to a stated safety factor. This performance is achieved by using IPP Deltaflex® flange engineering to increase the section modulus of the flange without increasing its weight. See figure 1 & 2, comparison of IPP Deltaflex® flange and conventional steel flange. 

 

 

 

IPP has installed literally millions of its patented convoluted flanges in the entire spectrum of code controlled commercial and industrial pipe systems. The design technology has consistently been the specification choice of world renowned piping engineers. The IPP Deltaflex® flange truly satisfies the claim of being a modern, high performance pipe flange. Pound for pound there exists no other pipe flange that can safely carry structural loads as efficiently as an IPP Deltaflex® flange.

 

 

 

 

Description

PP encapsulated Ductile Iron Deltaflex®
convoluted flange – PP/Steel
utilizes the patented IPP Deltaflex® flange
cross section
highly corrosion resistant

 

Utilization
for use on PE, PP, PVDF butt welding stub ends

 

Materials

glass reinforced Polypropylene (black)
with IPP Deltaflex® Ductile Iron insert
(GGG 40, DIN 1693)

 

Connecting
drilled to ISO/DIN 2501 (EN 1092

 

Dimensions
DA 20 – 180 mm: PN 10/16
> DA 180 mm: PN 10

 

 

 

 

 

Description

PP encapsulated Ductile Iron Deltaflex®
convoluted flange – PP/Steel
utilizes the patented IPP Deltaflex® flange
cross section
highly corrosion resistant

 

Utilization
for use use on PVC-U, PVC-C, ABS, PE, PP, PVDF
socket (63 mm) and butt welding stub ends

 

Materials

glass reinforced Polypropylene (black)
with IPP Deltaflex® Ductile Iron insert
(GGG 40, DIN 1693)

 

Connecting
drilled to ISO/DIN 2501 (EN 1092

 

Dimensions
DA 20 – 180 mm: PN 10/16
> DA 180 mm: PN 10 

 

 

 

 

 

Description

PP encapsulated Ductile Iron Deltaflex®
convoluted flange – PP/Steel
utilizes the patented IPP Deltaflex® flange
cross section
highly corrosion resistant

 

Utilization
for use use on PVC-U, PVC-C, ABS, PE, PP, PVDF
socket (63 mm) and butt welding stub ends

 

Materials

glass reinforced Polypropylene (black)
with IPP Deltaflex® Ductile Iron insert
(GGG 40, DIN 1693)

 

Connecting
drilled to ANSI B16.5 class 150

 

Dimensions
B16.47 class 150 series A
and AWWA C207

 

 

 

 

 

Description

epoxy coated Deltaflex® convoluted flange
utilizes the patented IPP Deltaflex® flange
cross section

 

Utilization
for use on PE, PP, PVDF butt welding stub ends

 

Materials

ductile Iron (GGG 40)

 

Connecting
drilled to ISO/DIN 2501 PN 10 (EN 1092)

 

Finish
epoxy coated (black)

 

 

 

 

 

Description

epoxy coated Deltaflex® convoluted flange
utilizes the patented IPP Deltaflex® flange
cross section

 

Utilization
for use on PE, PP, PVDF butt welding stub ends

 

Materials

ductile Iron (GGG 40)

 

Connecting
drilled to ISO/DIN 2501 PN 16 (EN 1092)

 

Finish
epoxy coated (black)