Products Description
Precision Fuel Control for Stable Engine Performance
The SR420 Needle Valve is a precision carburetor component designed to regulate fuel flow and maintain the correct fuel level inside the carburetor. Manufactured with high-quality materials, it provides reliable sealing, smooth fuel metering, and consistent engine performance while reducing the risk of fuel leakage and flooding.
Technical Profiles & Materials
Accurate Fuel Metering
Designed to precisely control fuel flow into the carburetor, ensuring stable fuel delivery and efficient engine operation.
Premium Wear-Resistant Materials
Manufactured from high-strength stainless steel with a durable rubber-tipped needle for excellent wear resistance and reliable sealing performance.
Precision Machining
Produced with tight manufacturing tolerances to ensure accurate fitment, smooth movement, and dependable fuel shut-off.
Excellent Sealing Performance
The precision needle and seat assembly helps prevent fuel overflow, leakage, and flooding, improving carburetor reliability and engine efficiency.
Technical Specifications
| ITEM | DETAILS |
|---|---|
| Type | Carburetor Needle Valve |
| Compatible Models | SR420 Mist Duster |
| Application | Carburetor Fuel System |
| Material | Stainless Steel with Rubber Tip |
| Function | Fuel Flow Regulation |
| Precision | High-Accuracy Fuel Metering |
| Installation | Direct Replacement |
| Corrosion Resistance | Excellent |
| Service Life | Long-Lasting with Proper Maintenance |
| Packaging |
Individual Bag or Customized Packaging |
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
Quality control
Expo experience
Customer Reviews
FAQ
Q1: What is the function of the SR420 Needle Valve?
A: The needle valve regulates fuel entering the carburetor and maintains the correct fuel level, ensuring stable engine performance and preventing fuel overflow.
Q2: When should the needle valve be replaced?
A: Replacement is recommended if the engine experiences fuel leakage, flooding, difficult starting, rough idling, or inconsistent fuel delivery caused by a worn or damaged needle valve.
Q3: Is the SR420 Needle Valve easy to install?
A: Yes. It is designed as a direct replacement component for compatible SR420 carburetors. For the best performance, it is recommended to inspect or replace the valve seat and related carburetor components during installation.
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