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HYDRANT VALVE 8890 Approved for use by President of Factory, JAFAR S.A. Failure to comply with the guidelines and instructions in this Operation and Maintenance Manual releases the manufacturer from all obligations, liability and guarantee. Due to continuous business development, we reserve the right to introduce modifications and structural changes to the presented product.
- Aluminium saddle tee C52 per DIN 14317. 1.2 PURPOSE The inspection coupling type 8890 with hydrant valve for water supply systems for chemically neutral pure water, containing solid impurities and for industrial systems. Recommended for use on above-ground installations on pipelines laid horizontally or vertically below the freezing zone.
2.2 MATERIALS List of materials used in the inspection couplings: Item Part name Material Reference standard Body EN-GJL-250 PN-EN1561: 2012 EN-GJS-400-15 PN-EN1563: 2012 Cover EN-GJL-250 PN-EN1561: 2012 EN-GJS-400-15 PN-EN1563: 2012 Cleanout opening CuZn39Pb1Al-B PN-EN1982: 2010 Cleanout opening seal Technical fibre Bonnet gasket EPDM/NBR PN-EN1629: 2005...
- max. operating temperature — acc. to PN-89/H — 02650. 2.6 MANUFACTURE AND ACCEPTANCE Inspection couplings with hydrant valve type 8890 are accepted and produced in accordance with: PN-EN 1074-2:2002 (Valves for water supply. Fitness for purpose requirements and appropriate verification tests.
4. ASSEMBLY AND INSTALLATION 4.1. INSTALLATION GUIDELINES Inspection couplings with hydrant valves type 8890 can be installed in above-ground pipelines in horizontal orientation, configured as shown in the following figure. The couplings are suitable for joining with the flanged ends of pipelines with the size equal to that of the valve flanges. Note that the system must not expose the coupling to bending or tensile stress from loading with the unsupported pipeline sections.
1. Coupling, 2. Pipeline flange, 3. Seal, 4. Fastening bolt, 5. Nut, 6. Washer 4.3 OPERATION Inspection couplings with hydrant valve type 8890 shall be used in accordance with the requirements for isolating valves. It is recommended to periodically purge the coupling with fresh water (once a year) to assure full performance.
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