Watts 800M4-QT-FZ handleiding
Handleiding
Je bekijkt pagina 2 van 12
Installation Guidelines
Pressure — Temperature
Working Temperature 33°F to 140°F (0.5°C to 60°C)
Maximum Pressure 150 psi (10.3 bar)
Minimum Pressure 15 psi (103 kPa)
Requirements
• Install 12" above the highest point of downstream piping.
(See Figure 1.)
Installation as stated above is essential for proper operation
• Install bonnet side up and allow access for testing/service.
• Install where discharge or spillage is not objectionable.
• Do not undersize supply or oversize the valve relative to
demand.
• Do not install where backpressure can occur.
• Protect from freezing. For freeze protection, specify Model
800M4FR or LF800M4FR. Or, consider the WattsBox insu-
lated enclosure. For more information, download ES-WB at
www.watts.com.
• Follow ASSE Standard 1020 that the atmospheric vent valve
remains open until the valve body pressure exceeds 1 lb. Until
this pressure is reached, some amount of spillage occurs at
the atmospheric vent. To minimize this leakage on start-up,
close the downstream shutoff valve and open the inlet shut-
off valve quickly.
Start-up Procedure
1. Close shutoff No. 2 (outlet).
2. Open shutoff No. 1 (inlet) until water discharges from the
bonnet then quickly open to pressurize the valve.
3. Open shutoff No. 2.
Freeze Protection
Use the following procedure to purge the PVB assembly with
pessurized air. (See Figure 2.)
1. Close the main shutoff valve.
2. Open upstream drain, test cocks and isolation ball valves to
depressurize line.
3. Purge with pressurized line.
4. Leave test cocks and isolation ball valve handles in 45°
angle to drain ball valves and prevent casting damage.
Typical Installation
The TWS hydrant is usually included in the PVB installation to
provide outside access to a building water supply for start-up,
winterizing, and servicing of irrigation sprinkler systems. (See
Figure 3.) The hydrant is connected to the PVB assembly and
installed through the structure wall to connect to the water
supply.
Figure 1
WattsBox
12" Minimum Clearance
Above the Highest Point of
Downstream Piping
Figure 2
Main Shutoff Valve
Flow
Union
Outlet Drain
Valve
Valve Pit
Sprinkler
System
Piping
12" Minimum Clearance
Above the Highest Point of
Downstream Piping
Upstream (Inlet) Drain
Figure 3
Key
Watts TWS
Drain Port or
Blow Down
Water
Supply
To Sprinklers
2
Bekijk gratis de handleiding van Watts 800M4-QT-FZ, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Watts |
| Model | 800M4-QT-FZ |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 1963 MB |