Description

This Standard covers ball valves in sizes NPS-&frac18; to NPS-4, with rated working pressures of atleast 860 kPa (125 psi) at 23 ± 2°C (73 ± 4°F), intended for water supply systems and specifies requirements for materials, physical characteristics, performance testing, and markings.

1.2 The requirements of this Standard are not intended to prevent the use of alternative materialsor methods of construction provided such alternatives meet the intent and requirements of this Standard.

1.3 Proposals for amendments to this Standard will be processed in accordance with the standardswriting procedures of IAPMO.

1.4 The user’s attention is called to the possibility that compliance with this Standard may requireuse of an invention covered by patent rights. By publication of this Standard, no position is takenwith respect to the validity of any such claim(s) or of any patent rights in connection therewith.If a patent holder has filed a statement of willingness to grant a license under these rights onreasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such alicense, then details can be obtained from IAPMO.