1. Úvod
This manual provides essential information for the proper installation, operation, and maintenance of your Watts 1 LFU5B-LP-Z3 1-inch Water Pressure Regulator Valve. Please read these instructions thoroughly before installation and retain this manual for future reference. This valve is designed to reduce incoming water pressure to a safe and functional level for residential and commercial plumbing systems, protecting fixtures and appliances from high pressure damage.
2. Bezpečnostní informace
- Always wear appropriate personal protective equipment (PPE) such as safety glasses and gloves during installation and maintenance.
- Ensure the main water supply is turned off and the system is depressurized before beginning any work on the valve.
- If you are not experienced with plumbing installations, it is recommended to consult a qualified professional.
- Do not exceed the maximum operating pressure or temperature specified for this valve.
- Ujistěte se, že jsou všechna spojení řádně utěsněna, aby se zabránilo únikům.
3. Konec produktuview
The Watts 1 LFU5B-LP-Z3 is a high-quality, lead-free brass water pressure regulator valve designed for durability and reliable performance. It features a 1-inch inlet and outlet size with FNPT Union x FNPT connection types, making it suitable for various water applications.

Obrázek 1: Watts 1 LFU5B-LP-Z3 1-Inch Water Pressure Regulator Valve. This image displays the brass body of the valve, including the inlet and outlet connections, and the adjustment screw at the top for pressure setting.
Klíčové vlastnosti:
- Materiál těla: Bezolovnatá mosaz
- Aplikace: Voda
- Max. Tlak: 300 psi
- Max. Teplota: 160 stupňů F
- Pressure Adjustment Range: 10 až 35 psi
- Typ připojení: FNPT Union x FNPT
- Velikost vstupu/výstupu: 1 palců
- standardy: ASSE 1003, ANSI A112.26.2, CSA B356, UPC
4. Specifikace
| Specifikace | Hodnota |
|---|---|
| Číslo modelu | 1 LFU5B-LP-Z3 |
| Materiál těla | Bezolovnatá mosaz |
| Aplikace | Voda |
| Velikost vstupu | 1 palců |
| Velikost výstupu | 1 palců |
| Typ připojení | FNPT Union x FNPT |
| Rozsah nastavení tlaku | 10 až 35 psi |
| Maximální teplota | 160 °F (71 °C) |
| Maximální tlak | 300 psi |
| Délka | 6-3/4 palce |
| Výška | 7-3/8 palce |
| Hmotnost položky | 5.9 unce |
| Normy splněny | ASSE 1003, ANSI A112.26.2, CSA B356, UPC |
5. Instalace
Proper installation is crucial for the optimal performance and longevity of your pressure regulator valve. It is recommended that installation be performed by a licensed plumber.
Kroky instalace:
- Vypněte přívod vody: Locate the main water shut-off valve for your property and turn it off.
- Systém odtlakování: Open a faucet at the lowest point in your system to drain water and relieve pressure.
- Vyberte umístění: Install the regulator on the main water supply line after the main shut-off valve and before any branch lines. Ensure there is sufficient space for future maintenance.
- Orientační ventil: The valve has an arrow indicating the direction of water flow. Install the valve so the arrow points in the direction of water flow into your property.
- Vytvořte spojení: Use appropriate plumbing practices to connect the 1-inch FNPT Union x FNPT ends of the regulator to your plumbing system. Apply thread sealant (e.g., PTFE tape or pipe dope) to all threaded connections. Tighten securely but do not overtighten.
- Install Pressure Gauge (Optional but Recommended): Install a pressure gauge downstream of the regulator to monitor the regulated pressure.
- Obnovení zásobování vodou: Slowly open the main water shut-off valve. Check for leaks at all connections.
- Čistit vzduch: Open faucets throughout the property to purge air from the system until water flows smoothly.
6. Operation and Pressure Adjustment
The Watts 1 LFU5B-LP-Z3 valve comes factory-set to a nominal pressure, but it can be adjusted within its specified range (10 to 35 psi) to meet your specific needs.
Nastavení výstupního tlaku:
- Ensure Water Flow: It is best to adjust the pressure while water is flowing at a low rate (e.g., a partially open faucet) to get an accurate reading.
- Locate Adjustment Screw: The pressure adjustment screw is located at the top of the valve.
- Decrease Pressure: Otočte seřizovacím šroubem proti směru hodinových ručiček to decrease the outlet pressure.
- Increase Pressure: Otočte seřizovacím šroubem ve směru hodinových ručiček to increase the outlet pressure.
- Monitorovací tlak: Use a pressure gauge installed downstream of the regulator to monitor the outlet pressure as you make adjustments.
- Test and Verify: After adjustment, close all faucets and observe the static pressure on the gauge. Open a faucet again to verify the dynamic pressure. Repeat adjustments as necessary until the desired pressure is achieved.
7. Údržba
Regular inspection and maintenance can extend the life of your pressure regulator valve and ensure consistent performance.
- Roční kontrola: Annually check the valve for any signs of leaks, corrosion, or damage.
- Kontrola tlaku: Periodically check the outlet pressure with a gauge to ensure it remains at the desired setting. Fluctuations may indicate internal wear.
- Čištění: If the water supply contains sediment, the internal screen (if applicable) may need cleaning. This typically requires shutting off the water, depressurizing the system, and disassembling the lower portion of the valve. Refer to a qualified plumber for this procedure.
- Náhradní díly: Use only genuine Watts replacement parts if internal components need to be replaced.
8. Řešení problémů
This section addresses common issues you might encounter with your water pressure regulator valve.
Běžné problémy a řešení:
- No Pressure Reduction:
- Příčina: Ventil nainstalován obráceně. Řešení: Check flow arrow and reinstall correctly.
- Příčina: Debris lodged in valve. Řešení: Disassemble and clean valve internals (professional recommended).
- Příčina: Diaphragm or seat worn out. Řešení: Replace internal components or the entire valve.
- Low Water Pressure (downstream):
- Příčina: Regulátor nastavený příliš nízko. Řešení: Adjust pressure setting clockwise to increase.
- Příčina: Partially clogged valve. Řešení: Inspect and clean internal components.
- Water Hammer or Chattering Noise:
- Příčina: Excessive flow velocity or worn components. Řešení: Ensure proper sizing; inspect and replace worn parts if necessary.
- Leaks from Valve Body:
- Příčina: Uvolněná spojení. Řešení: Tighten connections (ensure water is off first).
- Příčina: Poškozené O-kroužky nebo těsnění. Řešení: Replace seals (professional recommended).
- Příčina: Prasklé pouzdro. Řešení: Replace the entire valve.
If troubleshooting steps do not resolve the issue, contact a qualified plumbing professional or Watts customer support.
9. Informace o záruce
Watts products are manufactured to high-quality standards. For specific warranty terms and conditions applicable to the 1 LFU5B-LP-Z3 Water Pressure Regulator Valve, please refer to the official Watts website or the warranty documentation included with your purchase. Generally, Watts provides a limited warranty against defects in materials and workmanship under normal use and service.
10. Podpora
For technical assistance, replacement parts, or further inquiries regarding your Watts 1 LFU5B-LP-Z3 Water Pressure Regulator Valve, please contact Watts customer support through their official webwebu nebo kontaktních informací uvedených na obalu produktu.
Watts is a registered trademark. All rights reserved.





