Ultraliner PVC Alloy Pipeliners
 
At Hydroliner, we understand PVC pipe and have specifically engineered our materials to perform in a variety of trenchless rehabilitation applications. We firmly believe our primary mission as a company, and as individual employees, is to meet the needs of our customers. Ultraliner PVC Alloy Pipeliner is the only product which complies with either the ASTM F 1871 and the ASTM F 1504 industry standards. Additionally, Ultraliner regularly supplies pipes in diameters from 3" (75 mm) up to 30" (750 mm). As seen in the table below, each product has its own unique advantages allowing a project engineer to specify the product most appropriate for each pipe in need of rehabilitation. Either product, within applicable size limitations, can be properly designed for most projects:
  • Higher-Compliance [complying with ASTM F 1871]
  • Ultraliner PVC Alloy Pipeliner Higher-Stiffness [complying with ASTM F 1504]
  • Ultraliner PVC Alloy Pipeliner size availability: Available in any size from 3"(75 mm) to 30"(750 mm)
  • Available in any size from 3"(75 mm) to 15"(375 mm)
Industry standards:
  • ASTM D 1784 material standard
  • ASTM F 1871 product standard
  • ASTM F 1867 installation standard
  • ASTM F 1504 product standard
  • ASTM F 1947 installation standard    
Material Properties:    
  • Flexural modulus:  145,000 psi (1000 MPa) 280,000 psi (1930 MPa)
  • Flexural strength:  4,100 psi (28 MPa) 5,000 psi (34.5 MPa)
  • Izod impact resistance:  15 ft-lb/in (800.7 J/m) 15 ft-lb/in (800.7 J/m)
  • Chemical resistance: suitable for use under general sanitary sewer conditions suitable for use under general sanitary sewer conditions
You may wish to consider the relative design, installation, and "political" advantages, as described below, when making your product selection. [Additionally, you may want to consider the preference and expertise of our local licensed installer(s)]:
 
Advantages of Ultraliner's Higher Compliance PVC Alloy Material
(Ultraliner PVC Alloy Pipeliner complying with ASTM F 1871)
  • The higher compliance PVC Alloy material has more favorable thermal properties which provide a wider window of installation forgiveness and which enable larger diameter pipes to be lined due to the ability to sufficiently heat a thicker wall. 
  • The higher compliance PVC Alloy material has higher hydrostatic compression resistance at "equivalent" (according to the industry standard buckling design methodology) structural load bearing capacity.
  • The higher compliance PVC Alloy material attracts less soil load at "equivalent" hydrostatic compression resistance. [More load is attracted to stiffer points in the ground.] 
  • The higher compliance PVC Alloy material develops less localized stress at "equivalent" (according to the industry standard buckling design methodology) structural load bearing capacity. 
  • The higher compliance PVC Alloy material is superior at avoiding and/or reducing stress concentrations in the pipeliner wall. Such stress concentrations exist due to load concentrations at the imperfections (such as drop joints, off-set joints, and hinges) which are inherent to most pipes which are in need of rehabilitation. 
  • Reduced localized stress in the higher compliance PVC Alloy material results in reduced long-term creep and equates to greater long-term stability under most types of extreme loading conditions. 
Advantages of Ultraliner's Higher Stiffness PVC Alloy Material
(Ultraliner PVC Alloy Pipeliner complying with ASTM F 1504)
  • ASTM F 1504 is an older product standard which is included in more specifications, because it has been around longer. Having the higher stiffness PVC Alloy materials available enables Ultraliner, Inc. to obtain pipe sales it would otherwise miss out on.
  • The higher stiffness PVC Alloy material more closely "resembles" the physical properties of even older technologies such as CIPP which have been in use for 30 years, providing a more comfortable "familiarity."
  • More companies and sales personnel are working with customers to include the ASTM F 1504 specified higher stiffness materials into specifications, thus promotion and marketing of the higher stiffness PVC Alloy materials requires fewer "salesmanship" battles resulting in less marketing effort and expense.
  • Due to direct burial design experience, higher stiffness is incorrectly equated with higher strength, and thus is easier to promote and market. [In reality, higher stiffness is the "traditional" means of controlling contractor error during the installation of flexible direct burial pipe (such as D 3034 PVC pipe) which would otherwise result in excessive deflection during handling, back filling, and soil compaction. The stiffness of a pipe has limited influence upon deflection once side wall support is consolidated (as is typically the case in a trenchless pipeliner installation). In fact, the use of higher stiffness pipes actually increases the risk of contractor error during the trenchless installation of PVC pipeliners (due to a narrower window of installation forgiveness), while typically providing negligible increase in structural stability.] The customers' misguided desire for higher stiffness requires less marketing effort.
  • In situations where adequate soil support is not available, the higher stiffness PVC Alloy pipeliners may be preferable, if they are designed with adequate thickness to provide ring stability. [Higher stiffness materials can be improperly used as justification for thinner walled pipeliners which will not have comparable ring stability.]
  • Installing an airtight saddle with the higher stiffness PVC Alloy pipeliners merely requires the traditional 2 strap method, whereas it is recommended to use 4 straps with the higher compliance PVC Alloy pipeliners. Both materials work equally as well with the use of compression-fittings such as Inserta Tees, although stabilization of the joint is recommended prior to backfilling to ensure passage of an air test.