F842 Delivery valve assembly

The varieties of delivery valve couples produced by Huahui Oil Pump and Nozzle Company include: BQ series, No. I series, No. II series, A series, AK series, AD series, P series, and high-pressure common rail series, with diameters ranging from 5 to 9 mm. The product can meet the requirements of various diesel engine supporting oil pumps.

The engine fuel system is inseparable from the delivery valve couple, which consists of the delivery valve and the valve seat. Processed with special technology, the F842 Delivery valve assembly has excellent sealing performance and can withstand fuel pressures up to 100MPa. Accurately control the fuel injection rhythm during work to prevent oil return, ensure the accuracy and stability of fuel injection, and help the engine operate stably.

 

Overview

The F842 Delivery Valve Assembly is a precision-engineered fuel injection component designed for inline diesel fuel injection pumps. Its main function is to control the timing and quantity of diesel fuel delivered from the injection pump to the injector, while preventing fuel backflow and maintaining stable pressure after injection. This ensures optimal combustion, improved engine efficiency, and reduced emissions.

Crafted from high-quality alloy steel and treated with advanced hardening and grinding processes, the F842 is built for durability and consistent performance under extreme operating conditions. It is widely used in heavy-duty engines across transportation, agriculture, construction, and power generation industries.

 

Key Features & Advantages

Accurate Fuel Metering

Provides precise control over fuel delivery, improving combustion efficiency and reducing fuel waste.

Clean Cutoff Function

Ensures fast fuel shut-off after injection to prevent nozzle dribble and maintain cleaner emissions.

High Durability

Constructed from wear-resistant materials with enhanced surface treatment for long-lasting service life.

Pressure Stability

Maintains consistent pressure within the injection system, enhancing engine responsiveness and reliability.

Wide Compatibility

Designed for compatibility with various inline diesel fuel injection pumps used in industrial and mobile diesel engines.

 

Applications

The F842 Delivery Valve Assembly is ideal for use in:

Commercial Diesel Vehicles

Trucks, buses, and transport equipment requiring high-pressure fuel systems.

Agricultural Machinery

Tractors, harvesters, and irrigation equipment powered by diesel engines.

Construction and Mining Equipment

Loaders, bulldozers, excavators, and drilling machines.

Stationary Engines

Diesel-powered generators, marine engines, and industrial pump systems.

 

FAQ

How many production lines in your factory?

5 production lines

 

What is your MOQ?

100 pieces

 

Can you design the equipment according to our size?

Yes

 

What are the symptoms of a faulty delivery valve assembly?

Common signs include poor engine starting, excessive exhaust smoke, irregular idling, reduced fuel efficiency, and injector leakage.

 

Is the F842 compatible with all diesel engines?

No. It is designed for specific inline fuel injection pump models. Always verify compatibility with your pump or engine model before installation.

 

How long does the F842 Delivery Valve typically last?

With clean fuel and proper maintenance, it can last between 2,500 and 4,000 engine hours, depending on usage conditions.

 

Does the F842 require special installation procedures?

Yes. Proper alignment, cleanliness, and torque settings are critical. It is recommended to have the valve installed by a professional technician or service center.

 

Company Introduction

Changzhou Huahui Fuel Injection Equipment Co.,Ltd's main products include S and P series long and short injector assembly and injector nozzle parts. Injection pumps used in 165-1125 single-cylinder engines and plungers and oil delivery valve parts used in injection pumps. In recent years, with the efforts of our scientific research personnel, we have successively developed P series BQ type, PW type, P7 type, P8 type, PE type, PN type, P7100 type, P2000 type, high-pressure common rail series, etc., a total of more than 100 types of plunger parts and electronically controlled single pumps.