MPROP FOR RENAULT OPEL MOVANO VIVARO - 0928400487 METERING VALVE FOR PUMP 0445010033  

A. Basic Operation

EFI fuel pressure regulators come in various shapes and sizes but their purpose is the same- to hold the fuel pressure at a certain differential above the intake manifold pressure. The inner mechanism usually consists of a sealed diaphram chamber, a spring, a diaphram, bypass valve and a manifold pressure reference port. The valve is connected to the diaphram and the spring pushes against the diaphram from the manifold pressure side. The spring pressure determines the static fuel pressure. If there is vacuum on the port, say at idle, this reduces the effective spring pressure acting on the diaphram and reduces the fuel pressure under vacuum conditions. If there is pressure on the port, such as under boost, this effectively increases the spring pressure, thus fuel pressure. Most OE regulators use a one to one ratio. At one psi of boost, it would add one psi of fuel pressure. This way there is always a constant pressure differential across the fuel injector. Most regulators have a static pressure of between 38 and 44 psi.

B . Competitive Advantage 

C. Relieving Pressure with the Fuel Pressure Regulator

Disconnect the negative battery cable using a wrench. This will prevent sparks, which could ignite fuel and fuel vapors.
Locate the fuel pressure regulator on the fuel rail. The rail is mounted along the top area of the engine. Make sure the regulator is vacuum operated.
With your hand, remove the vacuum hose from the top of the fuel pressure regulator.
Connect a hand-operated vacuum pump to the top of the pressure regulator.
Apply about 16-inches Hg of vacuum to the regulator to push the fuel in the lines back into the fuel tank.

D. International market segmentation

Below chart have shown our market distribution, 

E. FAQ

1.  Q:  Are you a manufacturer or  foreign trade company ?

     A:   We are a manufacturer. Our factory is located at  CANTON 

2.  Q: What are your main products?

      A:  Our main products include Solenoid valve , Ignition coil and Sensors.

3.  Q:   How about the quality of this product?

     A:  We have produced this product for many years since 2001.  

           Besides, We have Quality Control Department. Each product must pass our strict inspection                                            before sending to our clients.  

          Thus, we have got many decent feedback from our clients. 

4. Q:  How about your delivery time?

     A: Normally, our delivery time is 30 days. 

5. Q:  How long is the warranty time?

    A:  2Year