1. Introduction
This manual provides comprehensive instructions for the proper installation, operation, and maintenance of the SUPPLYZ 838456 Inline Appliance Valve. This product is designed as a direct replacement for the Fisher Paykel 838456 valve. Please read this manual thoroughly before proceeding with installation or use to ensure safe and efficient operation.
The SUPPLYZ 838456 valve is engineered to meet or exceed original equipment manufacturer standards, ensuring reliable performance for your appliance.
2. Safety Information
WARNING: Failure to follow these safety instructions could result in property damage, personal injury, or death.
- Always disconnect power and turn off the water supply to the appliance before attempting any installation or maintenance.
- If you are unsure about any part of the installation process, consult a qualified technician or plumber.
- Wear appropriate personal protective equipment (PPE), such as gloves and eye protection, during installation.
- Ensure all connections are secure and leak-free after installation.
- Do not modify the valve or use it for purposes other than its intended design.
- Keep children and pets away from the work area during installation.
3. Package Contents
Verify that all items are present in the package before beginning installation:
- 1 x SUPPLYZ 838456 Inline Appliance Valve
- This Instruction Manual

Image 1: The SUPPLYZ 838456 Inline Appliance Valve. This image shows the complete valve unit, typically featuring inlet and outlet connections and the main valve body.
4. Installation
This section outlines the steps for replacing an existing appliance valve with the SUPPLYZ 838456. It is recommended that installation be performed by a qualified professional.
Required Tools (Not Included):
- Adjustable wrench or appropriate size spanner
- Towel or absorbent cloth
- Bucket or tray to catch water
- Thread sealant tape (PTFE tape) if applicable
Installation Steps:
- Prepare the Appliance:
- Locate the appliance connected to the valve.
- Turn off the main water supply to the appliance or the entire house.
- Disconnect the appliance from its power source (unplug or turn off circuit breaker).
- Relieve any residual water pressure by opening a faucet or operating the appliance briefly if safe to do so.
- Remove the Old Valve:
- Place a bucket or towels beneath the valve to catch any water.
- Carefully disconnect the water lines from both ends of the old valve using an adjustable wrench.
- Remove the old valve from its mounting location.
- Install the New SUPPLYZ 838456 Valve:
- Ensure the threads on the new valve and the water lines are clean.
- Apply thread sealant tape (PTFE tape) to the male threads of the valve connections, wrapping it clockwise 2-3 times.
- Connect the water lines to the new SUPPLYZ 838456 valve. Hand-tighten first, then use an adjustable wrench to tighten securely. Do not overtighten, as this can damage the threads or the valve.
- Ensure the valve is oriented correctly according to the water flow direction (if indicated on the valve body).
- Test for Leaks:
- Slowly turn the main water supply back on.
- Carefully inspect all connections around the newly installed valve for any signs of leaks.
- If leaks are detected, turn off the water supply, tighten the connections slightly, and re-check. Repeat until no leaks are present.
- Restore Power:
- Once satisfied that there are no leaks, reconnect the appliance to its power source.
- The appliance is now ready for use.
5. Operation
The SUPPLYZ 838456 Inline Appliance Valve operates passively as a component within your appliance's water supply system. Once correctly installed and the water supply is restored, the valve functions automatically to regulate water flow as required by the appliance. There are no user-adjustable settings on this valve.
Regularly check the area around the valve for any signs of moisture or leaks, especially after initial installation and during routine appliance checks.
6. Maintenance
The SUPPLYZ 838456 Inline Appliance Valve is designed for minimal maintenance. However, periodic inspection can help ensure its longevity and prevent potential issues.
- Visual Inspection: Periodically check the valve and its connections for any visible signs of wear, corrosion, or leaks.
- Cleaning: If necessary, gently wipe the exterior of the valve with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Leak Check: If you suspect a leak, follow the "Test for Leaks" procedure outlined in the Installation section.
If the valve shows signs of significant wear, damage, or persistent leaking, it should be replaced.
7. Troubleshooting
This section addresses common issues you might encounter with the SUPPLYZ 838456 Inline Appliance Valve.
| Problem | Possible Cause | Solution |
|---|---|---|
| Water leak at connections | Loose connection, insufficient thread sealant, damaged threads. | Turn off water supply. Tighten connections. If necessary, disconnect, reapply thread sealant tape, and reconnect. Inspect threads for damage. |
| No water flow through valve | Main water supply off, valve installed backward (if directional), blockage. | Ensure main water supply is on. Verify valve orientation. If blockage is suspected, professional inspection may be required. |
| Valve appears damaged | Physical impact, manufacturing defect. | If damaged, the valve should be replaced immediately. Refer to warranty information if applicable. |
If troubleshooting steps do not resolve the issue, contact SUPPLYZ customer support or a qualified technician.
8. Specifications
- Model Number: 838456
- Part Number: SZ-838456
- Brand: SUPPLYZ
- Item Weight: 12 ounces
- Product Dimensions (L x W x H): 9 x 6 x 4 inches
- Included Components: Valve Inline As
- Batteries Required: No
- UPC: 197771532486
9. Warranty and Support
Warranty Information:
This SUPPLYZ product comes with a 90 Days Manufacturer Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, misuse, abuse, accidents, or unauthorized modifications.
To make a warranty claim, please retain your proof of purchase and contact SUPPLYZ customer support.
Customer Support:
For technical assistance, troubleshooting, or warranty inquiries, please contact SUPPLYZ customer support. Refer to the product packaging or the official SUPPLYZ website for the most current contact information.