ASTM F1970 - 12e1
Standard Specification for Special Engineered Fittings, Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems
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Abstract
This specification covers special engineered fittings, appurtenances or valves for use in poly(vinyl chloride) or chlorinated poly(vinyl chloride) pipe and tubing systems. Fittings or appurtenances covered by this specification are generally either molded, fabricated, or assembled from molded or machined components. The materials used in components include rigid thermoplastics, thermoplastic elastomers, elastomerics, and metals. Seal dimensions shall be in accordance with the standard design dimensions and tolerances and shall be designed in such a manner as to provide adequate compressive force against mating parts after assembly. Solvent-weld, threaded, flange, and spigot connections shall also meet the requirements for bolt patterns, average outside diameter, out-of-plane roundness, and minimum wall thickness of the corresponding pipe. Hydrostatic internal pressure tests shall be performed on valves, check valves, and blind flanges to verify compliance with hydrostatic pressure resistance, leakage resistance, joint tightness, and activation pressure requirements.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. Scope
1.1 This specification covers fittings, appurtenances and valves which are to be used with pipe and tubing complying with Specifications D1785, D2241, D2846/D2846M, F441/F441M or F442/F442M, or other piping as specified by the fittings manufacturer. These products, such as unions, flanges or valves, are not included in the scope of existing ASTM specifications. This specification includes minimum requirements for testing, materials, dimensions, workmanship, marking, and in-plant quality control.
1.2 Fittings or appurtenances covered by this specification are generally either molded, fabricated, or assembled from molded or machined components. The materials used in components include rigid thermoplastics, thermoplastic elastomers, elastomerics, and metals. The body or main portion of the fitting, appurtenance or valve is typically PVC, CPVC, PE or PA (nylon). All products covered by this standard are intended to be used in PVC or CPVC plastic piping systems, or as a transition from these to metal systems.
1.4 The products covered by this specification are intended for use with the distribution of pressurized liquids only, which are chemically compatible with the piping materials. Due to inherent hazards associated with testing components and systems with compressed air or other compressed gases some manufacturers do not allow pneumatic testing of their products. Consult with specific product/component manufacturers for their specific testing procedures prior to pneumatic testing.
1.5 Fittings which rely on heat fusion welding for connection to the piping system are outside the scope of this specification.
1.6 Check valves (including foot valves) covered by this specification shall not be considered backflow prevention devices and shall not be used for the protection of a potable water supply. For definitions and requirements of backflow prevention devices, consult model plumbing codes and ASSE.2
1.7 Due to the complex and installation-specific concerns surrounding chemical resistance and corrosion, this specification does not address the compatibility of the products with all possible end-use environments. Additional testing specific to the end-use environment is recommended if the system is conveying liquids other than potable water.
1.8 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are given for information only.
1.9 The following safety caveat applies only to the test methods and in-plant quality control portions, section of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
D1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1784 Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
D1785 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120
D1898 Practice for Sampling of Plastics
D2000 Classification System for Rubber Products in Automotive Applications
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
D2241 Specification for Poly(Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)
D2466 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40
D2467 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80
D2846/D2846M Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution Systems
F412 Terminology Relating to Plastic Piping Systems
F438 Specification for Socket-Type Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40
F439 Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80
F441/F441M Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80
F442/F442M Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe (SDR-PR)
F477 Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe
F1498 Specification for Taper Pipe Threads 60 for Thermoplastic Pipe and Fittings
ASME Standards
B1.20.1 Pipe Threads, General Purpose (Inch) Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990. B16.5 Pipe Flanges and Flanged FittingsNSF Standards
NSF 14 Plastics Piping Components and Related Materials NSF International, P.O. Box 130140, Ann Arbor, MI 48113-0140. NSF 61 Drinking Water System Components - Health EffectsISA Standard
ISA S75.02 Control Valve Capacity Test Procedure Instrument Society of America, 67 Alexander Drive, Research Triangle Park, NC 27709.ASQ Standard
ANSI/ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes American Society for Quality, 611 East Wisconsin Ave., Milwaukee, WI 53201-3005.ICS Code
ICS Number Code 23.040.45 (Plastics fittings)
Referencing This Standard
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DOI: 10.1520/F1970
Citation Format
ASTM F1970-12e1, Standard Specification for Special Engineered Fittings, Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems, ASTM International, West Conshohocken, PA, 2012, www.astm.org
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