U407 Angle Check Valve

U407 Angle Check Valve

U407 Angle Check Valves are installed on suction system, fuel lines on top of fuel storage tanks to maintain prime. Models are available with male threaded inlets for connection directly into tank bung fittings or with female inlets for connection to a nipple that is threaded into a tank bung fitting. Single-poppet models can be used in applications where the valve is easily accessible for maintenance and disc cleaning or replacement.

Materials:

Body: cast steel

Surface: electronic Nickel plated

Seal : Viton Cased Oil Seal

Features:

U407 features a spring-loaded poppet and Viton Cased Oil Seal discs to assist in keeping the valve closed when installed in high-vibration areas

The Angle Check Valves are recommended for use on suction lines where the pressure does not exceed 34 ft of head. ( approximately 15 psi.)

Materials is cast steel diffrent with cast iron materials , the body will be more stronger more hermetical more pressure resistance

Used for disel, gasoline, ethanol etc.

100% Factory Tested.

ds of gear pumps. The following introduce cycloidal gear pump: Diagram 2-8: Two kinds of internal gear pumps Gear pump structure Diagram 2-9 is an exploded drawing for inner cycloidal gear pump. Inner cycloidal gear pump mainly composed of frame, gear-group, overflow valve, strainer, pump cover subassembly, etc. pump chamber is cylinder-shape in which strainer is installed at inlet of oil. Overflow valve and pump is in parallel connection. Concentric installation is between pump chamber and exterior gear-group, between inner gear and principal axis. But inner gear and outer gear is assembled centrifugally. Principal axis drives gear-group rotate. Gear pump has two chambers --- pressure oil chamber that discharge oil and suction chamber that suck oil—which are not connectable. When gear pump operating gear-group rotate anticlockwise at view of pump cover direction. Delivery pressure depends upon the adjustment of overflow valve, laden degree and inner penetration. In the process of nozzle open, small oil resistance, overflow valve is in low status of openness. However, as nozzle turn down or large oil resistance and pressure, the spring of over fuel dispenser flow valve move sideward, increasing openness so that more oil flow into negative chamber. The outlet pressure of pump keeps under 0.3Mpa. Working principle of overflow valve The outlet of overflow valve is the interface in where pressured oil chamber pass into suction cham fuel dispenser ber. The overflow valve play role as a protection to restrict the highest pressure in hydraulic system and to adjust delivery volume of fuel dispenser. Its structure is illustrated in Diagram 2-9. Motor driving pump starting work, the pressured oil from pressure area flow into vapor-separator and overflow valve outlet via pump outlet. Given switch nozzle, part of oil flow out of pipe of vapor separator, another part of oil flow into suction chamber via overflow valve with small openness. However, as close down nozzle, pressured oil overcome spring bounce under high pressure in hydraulic s fuel dispenser

he CD sends the unsolicited data Status.　　 MAJOR ERROR If a major error event occurs the CD moves into the INOPERATIVE state.　　 Action: The CD sends the unsolicited data Status and Error_Type_Message.　　 MINOR ERROR If a minor error event occurs the CD terminates its current operation and stays in the IDLE　　 state.　　 Action: The CD sends the unsolicited data Error_Type_Message.　　 In case a command is sent which is not included in this event description the command will　　 (OTHER)　　 be rejected and the CD stays in the same state.　　 Action: The CD sends a NAK - Command refused in this state .　　2.2.3 State IDLE 3　　 STATE DESCRIPTION　　January 2005 IFSF - STANDARD FORECOURT PROTOCOL Version 2.01　　 CONTROLLER DEVICE APPLICATION　　Page: 10　　 fuel dispenser In this state the CD is waiting for a request or is processing a request. This is the normal　　 IDLE　　 state in which the CD should be in most of the time.　　 EVE fuel dispenser NT DESCRIPTION　　 Closed When the Closed command is received the CD moves into the CLOSED state.　　 Action: The CD sends the unsolicited data Status.　　 MAJOR ERROR If a major error event occurs the CD moves into the INOPERATIVE state.　　 Action: The CD sends the unsolicited data Status and Error_Type_Message.　　 MINOR ERROR If a minor error event occurs the CD terminates its current operation and stays in the IDLE〠fuel dispenser

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