1" X 3/4" NPT 316 Red Hex NIPP INST - PRHN-16-12 Specification Pipe Thread NPT ISO/BSP Parallel ISO/BSP Tapered ISO/BSP GAUGE (based on DIN 16288 1987) Unified (SŪ) Relevant Standards ASME/ANSI B1.20.1, MIL-P-7105B ISO 228, BS 2779, JIS B 0202 ISO 7, BS 21, JIS B 0203 ISO 228, BS 2779 ASME B1.1 Installation Instructions To ensure a leak proof tight seal, we recommend the use of pipe thread sealant on all NPT threads. The most effective sealing method is the use of PTFE tape. The tape should be used on all male NPT tapered threads. Clean both male & female tapered threads, then wrap the tape in the direction of the male thread. Remove any excess tape. Features: Sizes range from 1/8" to 1" All fittings are marked for easy source tracing All threads are capped for protection & packaging Straight fittings are manufactured from bar stock Forged fittings are manufactured from forgings. All pipe threads meet the requirements of ASME/ANSI B1.20.1 for tapered pipe threads (NPT). Working pressure meets the requirements of Power Piping Code ANSI B31.1 & section VII of ASME Boiler & Pressure Vessel Code. Pressure Ratings: Ratings are based on ASME code for pressure piping B13.3, process piping at ambient temperature. All fittings in the range are available in Brass and Carbon Steel on request.