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Home , Polytetrafluoroethylene, Polyvinyl chloride, Vinyl chloride

and Tapping Sleeves Valves C-26 General Information

Brief Explanation of ASTM PVC (Polyvinyl ) Standard Specifications PVC is the largest volume of the vinyl family of plas- tics. Overall it has excellent basic properties, may be easily processed and welded, and is exceptionally economical How They Relate To Plastic Valves in cost. Chlorinated PVC, in which the content is increased from 56.8% to about 67%, increases the heat deflection temperature at 264 psi from 155°F (68°C) to ASTM D-1784 “Rigid Poly () 218°F (103°C). (PVC) Compounds” PP () This specification covers rigid plastic compounds com- posed of poly (vinyl chloride), or vinyl copolymers, and the Polypropylene is the lightest of the most common thermo- necessary compounding ingredients. The compounding in- . The key properties are its high heat resistance, stiffness, gredients may consist of , stabilizers, nonpoly (vinyl and chemical resistance. It may be usable for low stress structural chloride) resin modifiers, and pigments essential for processing, applications up to 275°F (135°C) but for applications has property control, and coloring. an upper limit of 212°F (100°C).

ASTM D-2464 “Threaded Poly (Vinyl ETFE ( ) Chloride) (PVC) Plastic Fitting, ETFE retains good mechanical properties to an upper Schedule 80” limit of 350°F (177°C). It has a continuous working tem- perature limit of 300°F (149°C). ETFE is a tough plastic This specification covers poly (vinyl chloride) (PVC) with good tensile strength, and high impact resistance. It threaded Schedule 80 pipe fittings. Included are requirements lacks the full chemical resistance properties of PTFE. for materials, workmanship, dimensions and burst pressure. The tapered pipe threads in this specification refer to ANSI B2.1 and it is this portion to which all plastic valves comply. Abbreviations used for Plastics ASTM D-2467 “Socket Type Poly (Vinyl *ABS ����������������������� Acrylonitrile-butadiene-styrene Chloride) (PVC) Plastic Pipe Fittings, *CPVC �������������������� Chlorinated *CR ��������������������������� rubber (®) Schedule 80” *CSM ��������������������������Chlorine sulphonyl This specification covers poly (vinyl chloride) (PVC) (®) Schedule 80 socket type pipe fittings. Included are requirements *EP �������������������������� Epoxide, for materials, workmanship, dimensions and burst pressure. *EPDM ������������������� Ethylene propylene rubber The tapered pipe sockets in this specification refer to ANSI *FKM ���������������������� Flouro (Viton®) B2.1 and it is this portion to which all plastic valves comply. *FPM ���������������������� rubber (Viton®) *HDPE �������������������� High- polyethylene ANSI B16.5 American National Standard *IIR ������������������������� Isobutene isoprene (butyl) rubber “Pipe Flanges and Flanged Fittings” *NBR ���������������������� Nitrile (butadiene) rubber This standard covers flanges and flanged fittings in all pres- *NR ������������������������� sure classes. Bolt hole circle diameters and bolt hole diameters *PA �������������������������� are called out as as other dimensions. It is the 150# class *PB �������������������������� in which plastic valves comply, where applicable. *PC �������������������������� *PCTFE ������������������ Polychlorotrifluoroethylene Description of Individual *PF �������������������������� Phenol-formaldehyde *POM ���������������������� (Kematal®) Plastics *PP �������������������������� Polypropylene *PTFE ������������������������� (Teflon®) PTFE (Polytetrafluoroethylene) *PVC ����������������������� Polyvinyl chloride *PVDF �������������������� Polyvinylidene PTFE is resistant to practically every known chemi- cal or solvent in combination with the highest useful * used in pipeline construction temperature limit of commercially available plastics. Fabricated PTFE has a useful temperature range from -436°F (-260°C) to 500°F (260°C).

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