UNxÂ® FLUID ENDS - Jetstream

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TECHNICAL up to 15,000 PSI (1000 Bar) CONNECTION TYPES Several connection types are used at pressures of 15,000 psi (1000 bar) and below. The purpose of this section is to allow users to identify the connections needed and provide information on the features and proper use of each. Actual Size Reference Chart Pipe threads (npt) TECHNICAL • Most widely used connection type at pressures of 15,000 psi (1000 bar) and below. • Pipe threaded fittings are relatively inexpensive and readily available in sizes from 1/16" to 1". Larger sizes are available with limited fitting selection. • NPT threads are tapered so that, as the thread engagement between the male and female threaded components increases, the threads get closer until the connection becomes tight. • Unlike connection types that seal using closely machined seating surfaces or soft seals (such as O-rings), pipe threads seal around the threads, with Teflon ® tape or pipe joint compound applied to the threads to prevent water from escaping through the tiny gaps between the male and female threads. • Pipe threads, on the other hand, have a significant potential for galling — where threads seize together as threaded components are tightened. Some of the factors that affect the likelihood of galling are: ° Materials: many stainless steels have a higher tendency to gall than carbon steels, and like materials are more prone to galling than two different materials. ° Thread quality: a rough finish on thread surfaces increases the potential for galling. ° Thread profile: some manufacturers allow sharp edges at the crest of each thread causing interference with the thread roots of mating part (see illustration at right) and significantly increasing the risk of galling. All pipe threads on Jetstream products are machined with flat thread crests to prevent damage to mating parts. ° Copper plating is used on Jetstream stainless steel fittings with male pipe threads to prevent galling. ° Thread lubricants (anti-seize) applied to the male threads before engagement greatly reduce the chance of galling. Consistent use of thread lubricant is strongly recommended for all connections but absolutely essential for pipe threads or stainless steel connections. Jetstream of Houston, LLP Phone: US & Canada: 800-231-8192 or 813-590-1300 Web Site: www.waterblast.com I-2 Copyright Jetstream of Houston, LLP © 2011 Effective 2/2011
TECHNICAL up to 15,000 PSI (1000 Bar) CONNECTION TYPES Pipe threads (npt) (continued) • Jetstream pipe threads are machined to a special specification to ensure greater thread engagement for increased safety and to reduce the risk of galling as noted on the previous page. Pipe Thread Connection Instructions Actual Size Reference Chart (continued) 1. Wrap Teflon ® tape three or four times around the male threads in a clockwise direction (if looking at the face of the threaded end of the part). 2. Brush on nickel- or silver-based thread lubricant (anti-seize) over the Teflon. 3. Install male threaded component into female threaded component and hand tighten. 4. Wrench tighten two turns past hand tight. TECHNICAL Jetstream of Houston, LLP Phone: US & Canada: 800-231-8192 or 813-590-1300 Web Site: www.waterblast.com I-3 Copyright Jetstream of Houston, LLP © 2011 Effective 2/2011
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Your Waterblast Solutions Provider
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Table of Contents up to 15,000 PSI
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Units up to 15,000 PSI (1000 Bar) U
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PUMPS & FLUID ENDS pumps & fluid en
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PUMPS & FLUID ENDS up to 15,000 PSI
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PUMPS & FLUID ENDS PUMPS & FLUID EN
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guns, valves & Filters up to 15,000
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Hoses & Lances up to 15,000 PSI (10
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NOZZLES up to 15,000 PSI (1000 Bar)
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NOZZLES NOZZLES up to 15,000 PSI (1
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NOZZLES up to 15,000 PSI (1000 Bar)
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Nozzles up to 15,000 PSI (1000 Bar)
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