1. ആമുഖം
This manual provides essential information for the proper installation, operation, and maintenance of the Generic 6" Ductile Iron Double Disc Wafer Check Valve, Model RDH77XSR D150. Please read these instructions thoroughly before installation or use to ensure safe and efficient performance.
1.1 ഉൽപ്പന്നം കഴിഞ്ഞുview
The 6" Ductile Iron Double Disc Wafer Check Valve is designed for reliable backflow prevention in various industrial and plumbing applications. It features a compact wafer design for easy installation between flanges and a dual-disc spring-loaded mechanism for quick closing, minimizing water hammer.
1.2 പ്രധാന സവിശേഷതകൾ
- നീണ്ടുനിൽക്കുന്ന നിർമ്മാണം: Manufactured from Ductile Iron ASTM A536, 65-45-12 for enhanced strength, pressure resistance, and longevity.
- Corrosion-Resistant Disc: Equipped with a 316 Stainless Steel disc, ensuring excellent resistance to rust and chemical corrosion.
- Leak-Proof Sealing: Features an EPDM seat for tight sealing performance and outstanding resistance to water and mild chemicals.
- Compact Wafer Design: Facilitates easy installation between flanges, reducing space requirements and simplifying maintenance.
- Reliable Backflow Prevention: A dual-disc spring-loaded mechanism ensures quick closing to prevent reverse flow and water hammer.
Figure 1: Generic 6 inch Ductile Iron Double Disc Wafer Check Valve. This image shows the overall design of the valve, highlighting its compact wafer style and robust construction.
2 സുരക്ഷാ വിവരങ്ങൾ
Always observe general safety precautions when handling and installing industrial equipment. Failure to follow these instructions may result in property damage, injury, or death.
- ഇൻസ്റ്റാളേഷൻ അല്ലെങ്കിൽ അറ്റകുറ്റപ്പണികൾ നടത്തുന്നതിന് മുമ്പ് സിസ്റ്റത്തിലെ മർദ്ദം കുറയുകയും വെള്ളം വറ്റിക്കുകയും ചെയ്തിട്ടുണ്ടെന്ന് ഉറപ്പാക്കുക.
- സുരക്ഷാ ഗ്ലാസുകൾ, കയ്യുറകൾ, സംരക്ഷണ വസ്ത്രങ്ങൾ എന്നിവയുൾപ്പെടെ ഉചിതമായ വ്യക്തിഗത സംരക്ഷണ ഉപകരണങ്ങൾ (പിപിഇ) ധരിക്കുക.
- Handle the valve with care to prevent damage to sealing surfaces or internal components.
- Do not exceed the specified working pressure or temperature range.
- Consult local codes and regulations for proper installation procedures.
3. ഘടകങ്ങളും വസ്തുക്കളും
The Generic 6" DI D.D. Wafer Check Valve is constructed from high-quality materials designed for durability and performance:
- ബോഡി മെറ്റീരിയൽ: Ductile Iron ASTM A536, 65-45-12
- ഡിസ്ക് മെറ്റീരിയൽ: 316 സ്റ്റെയിൻലെസ്സ് സ്റ്റീൽ
- സീറ്റ് മെറ്റീരിയൽ: EPDM (എഥിലീൻ പ്രൊപിലീൻ ഡൈൻ മോണോമർ)
- പൂശുന്നു: Fusion Bonded Epoxy Coating in accordance with ANSI/AWWA C550
4. സജ്ജീകരണവും ഇൻസ്റ്റാളേഷനും
Proper installation is crucial for the optimal performance and longevity of the check valve. This valve is designed for installation between flanges.
- തയ്യാറാക്കൽ:
- Ensure the pipeline is clean and free of debris.
- Verify that the valve's specifications (size, pressure, temperature) match the system requirements.
- Confirm that the mating flanges are clean and properly aligned.
- ഓറിയൻ്റേഷൻ:
- Install the valve with the flow arrow on the valve body pointing in the direction of the intended flow.
- The valve can be installed in horizontal or vertical pipelines. For vertical installations, ensure the flow is upwards.
- പ്ലേസ്മെൻ്റ്:
- Carefully insert the wafer check valve between the two mating flanges.
- Ensure the valve is centered and the discs can open and close freely without obstruction from the pipe walls or flange bolts.
- ബോൾട്ടിംഗ്:
- Insert the flange bolts through the assembly.
- Tighten the bolts gradually and evenly in a crisscross pattern to ensure uniform compression of the gaskets and proper seating of the valve. Avoid over-tightening.
- Flange specifications: ASME B16.1 CL125, ASME B16.5 CL150.
- പോസ്റ്റ്-ഇൻസ്റ്റലേഷൻ പരിശോധന:
- After installation, slowly pressurize the system and check for leaks.
- Observe the valve's operation during initial system startup.
5. ഓപ്പറേഷൻ
The Generic 6" DI D.D. Wafer Check Valve is an automatic flow control device. It operates by allowing fluid to flow in one direction and preventing backflow in the opposite direction.
- Forward Flow: When fluid flows in the designated direction, the pressure of the fluid pushes the dual discs open against the spring tension, allowing flow through the valve.
- Backflow Prevention: If the flow stops or reverses, the spring tension, combined with the back pressure of the fluid, forces the discs closed against the EPDM seat, preventing reverse flow and protecting upstream equipment.
- പ്രവർത്തന സമ്മർദ്ദം: 300 വരെ പി.എസ്.ഐ.
- താപനില പരിധി: 0℃ - 80℃.
- Tampഎർ സ്വിച്ച്: Normally Open and Closed options are available for monitoring valve position (if equipped).
6. പരിപാലനം
The Generic 6" DI D.D. Wafer Check Valve is designed for minimal maintenance. Regular inspection is recommended to ensure continued reliable operation.
- ആനുകാലിക പരിശോധന: Regularly inspect the valve for external leaks, corrosion, or signs of damage.
- പ്രവർത്തന പരിശോധന: Periodically verify that the valve is opening and closing correctly by observing system pressure and flow.
- വൃത്തിയാക്കൽ: If the system fluid contains particulates, periodic flushing of the pipeline may be necessary to prevent debris accumulation around the discs and seat.
- മാറ്റിസ്ഥാപിക്കൽ: If the valve shows signs of significant wear, damage, or consistent leakage, it should be replaced. Internal components are generally not field-serviceable.
7. പ്രശ്നപരിഹാരം
This section addresses common issues that may arise during the operation of the check valve.
| പ്രശ്നം | സാധ്യമായ കാരണം | പരിഹാരം |
|---|---|---|
| Valve not closing completely (backflow) |
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| Valve not opening fully (restricted flow) |
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| ബാഹ്യ ചോർച്ച |
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For issues not covered here, or if troubleshooting steps do not resolve the problem, contact customer support.
8 സ്പെസിഫിക്കേഷനുകൾ
| ആട്രിബ്യൂട്ട് | വിശദാംശങ്ങൾ |
|---|---|
| മോഡൽ നമ്പർ | RDH77XSR D150 |
| വലിപ്പം | 6 inches (Available sizes: 2" - 12") |
| ബോഡി മെറ്റീരിയൽ | Ductile Iron ASTM A536, 65-45-12 |
| Disc Material | 316 സ്റ്റെയിൻലെസ്സ് സ്റ്റീൽ |
| സീറ്റ് മെറ്റീരിയൽ | ഇ.പി.ഡി.എം |
| ഡിസൈൻ സ്റ്റാൻഡേർഡ് | MSS SP-67 |
| Top Flange Standard | ISO 5211 |
| പ്രവർത്തന സമ്മർദ്ദം | 300 പി.എസ്.ഐ |
| താപനില പരിധി | 0°C - 80°C (32°F - 176°F) |
| പൂശുന്നു | Fusion Bonded Epoxy Coating (ANSI/AWWA C550) |
| ഫ്ലേഞ്ച് സ്പെസിഫിക്കേഷൻ | ASME B16.1 CL125, ASME B16.5 CL150 |
| നിർമ്മാതാവ് | NASCO Supply LLC |
9. വാറൻ്റിയും പിന്തുണയും
ഈ ഉൽപ്പന്നം എ 1 വർഷത്തെ വാറൻ്റി from the date of purchase, covering defects in materials and workmanship under normal use and service.
For warranty claims, technical assistance, or support, please contact NASCO Supply LLC, the manufacturer. Ensure you have your model number (RDH77XSR D150) and purchase details available when contacting support.
നിർമ്മാതാവ്: NASCO Supply LLC
For further assistance, please refer to the contact information provided at the point of purchase or on the manufacturer's official webസൈറ്റ്.
