ASME A112.19.8a:2008 pdf free download

ASME A112.19.8a:2008 pdf free download

ASME A112.19.8a:2008 pdf free download.Suction Fittings for Use in Swimming Pools, Wading Pools,Spas, and Hot Tubs. Submerged Suction Outlets. All other suction outlets for use in swimming pools, wading poois, spas, and hot tubs, as well as all other aquatic facilities, shall be considered as “Submerged Suction Outlets.”
1.1.7 Single or Multiple Usage Cover/grates that pass the body entrapment portion of this Standard as well as meeting all other requirements in this Standard shall be permanently marked “For Single or Multiple Drain Use,”“For Single Drain Use,” or “For Multiple Drain Use Only” at the manufacturer’s option. Cover/grates that fail the body entrap. ment portion of this Standard or any other requirements of this Standard may not he certified under this Standard.
1.2 Related Standards
Since the scope of this Standard is directly related to suction fittings, it is important to mention that the fittings themselves represent only one portion of the suction entrapment scenario. Several other standards, including but not limited to, ANSI/NSPI-1, -2, -3, -4,
-5, -6, and -8, ANSI/IAF-9, as well as ASME A112.19.17, and ASTM F 2387-04, as outlined in para. 1.4, should be consulted so as to provide coverage br the various other aspects of this potential hazard in swimming poois. wading poo1s. spas. and hot tubs.
1.3 UnIts of Measurement
When values are stated in U.S. Customary units and in the International System of Units (SI), the values stated in U.S. Customary units shall be considered as the standard.
1.4 References
The following standards are referenced in this document. Unless otherwise specified, the latest edition shall apply
body membrane: a rectangular inextensible isotropic sheet,for example, a 20 mil (0.5 mm) Vinyl sheet, in an 18 in.×49 in.(457 mm × 1 245 mm) pattern with 4 in.(102 mm) corner radii.
complete system: comprising a pump, suction outlet (andpossibly inlet), and connecting piping as specified bymanufacturer. No other operating components or valvesmay be included. Safety devices, vents, suction vacuumrelease systems, etc., shall be used only as specified bythe manufacturer. Nonoperating components such asdrains are permitted.
cover: a fitting or device generally placed between thesuction piping and the bather. Not used in this documentto avoid confusion.See also cover/grate.
cover/grate: covering fitting or assembly that separatesthe bather from the suction sump or piping, sometimesreferred to as a “grate” or a “cover.”
dual blockage: a condition existing when a body mem-brane is placed to cover one suction outlet completelyand any portion of the second suction outlet connectedto the same individual suction system.
dual outlets: two suction outlets connected to an individ-ual suction system but separated by a body membraneas a minimum.
edge: the line of intersection between any two surfaceswith an intersecting angle greater than 180 deg, mea-sured face to face (see Fig. 1), and having a transitionalradius between the two faces of less than 0.75 in.(19 mm).