U403 Emergency shut-valve

U403 Emergency shut-valve

U403 Series Emergency Shut-off Valve are installed on fuel supply lines beneath at grade level to minimize hazards associated with collision or fire at the dispenser. If the dispenser is pulled over or dislodged by collision, the top of the valve breaks off the flow of fuel. Single-poppet models shut off supply flow, while double-poppet models shut off supply as well as prevent release of fuel from the dispenser's internal piping. The base of the Emergency Valve is securely anchored to the concrete dispenser island through a stabilizer bar system within a U-Bolt Assembly. Valve inlet (bottom) connection are female pipe threads and outlet (top) connections are available with female threads, male threads, or a union fitting. Other options include suction system models with a normally closed secondary poppet which maintain prime, and models with external threads on inlet body which connect to secondary containment system.

Materials:

Body: cast iron(Spray-paint)

Surface: electronic Nickel plated

Seal : Buna-N O-ring

Features :

Flow rate: 0- 120 L/M

Working pressure: 0.2Mpa

Valve closing speed: 0.5s

Lowest shut-off temperature: 75 ?

Medium: water, gasoline, diesel, and kerosene

Operating Environment: -30 ~+55degree

Fire Protection- a fusible link trips the valve closed at 75 to shut off fuel

supply to the dispense.

Integral Test Port - a 3/8" Test Port allows the piping system to be air tested

without breaking any piping connection.

Low-Profile Tops- Female and Union-top double-poppet valves have a low-profile top to allow upgrading from single-poppet valves without changing existing piping.

100% Factory Tested.

Replacement Parts:

Key Description Weight

1 Protect pin

1 Cap(Single) 0.795kg

2 Cap(Double) 0.895kg

Package:

Net Weight Cross Weight Dimension

18kg/case of 6 20kg/case of 6 37.5x13.5x39 cm /case of 6

ection is small, pump suction is large; vi fuel dispenser ce versa, large returned oil low suction distance. Diagram 2-5: Suction flow of vane pump Suction capacity of pump is restricted not only by its structure but also by the oil physical trait and pipeline. Under a certain temperature, air pocket phenomenon of oil will generated when vacuum reaching a given degree, so that the pump can’t suck oil normally. At high oil level, large resistance from pipeline, much higher vacuum pressure occurs at the inlet of pump; the higher temperature the more likely create air pocket. The phenomenon is likely to appear given the oil is gasoline. The phenomenon of cavitation is generated when partial pressure at inlet of pump is low than air pressure, the dissolved gas in oil begin separate out, and oil start gasifying vigorously as pressure getting down, reaching saturation pressure. The normal working of pump is affected due to a great of foam damaging the continuity of liquid flow. Fuel dispenser is likely come out any oil or work with large noise as the cavitation is severe. Components will be damaged in this long phenomenon. At same time, oil vibration is increased so that the accuracy become down, as well as shorting service life of hydraulic components. The correlation between liquid saturation and gas pressure is illustrated in diagram 2-6. Diagram 2-6: Relations among temperature, steam pressure and liquid saturation Diagram 2-6 shows gasoline more likely to Air area than water and coal oil under the same pressure along with temperature increasing; under the same temperature the more vacuum pressure the earlier in air-area. There are two aspects that should be considered to prevent cavitation in pump inlet. One is that the design parameter of pump should be rational. The other is that pipeline should be installed scientifically. The effect of hydraulic pipe to fuel dispenser’s suction capacity will be introduced in detail. To understand the principle of cavitation and causation of affecting pump suction capacity is fuel dispenser fuel dispenser

- Address name abbrev fuel dispenser iation included　　 - Data_Id 1: Value 0-255 allowed　　 - Data_Id 2: Rename to Nb_Products　　 - Data_Id 3: Rename to Nb_Fuelling_Modes　　 - Data_Id 4: Rename to Nb_Meters　　 - Data_Id 5: Rename to Nb_FP　　 - Data_Id 6: Add countries field type bcd4　　 - Data_Id 8: Add description 0 means that light is not in use　　 - Data_Id 9: Add description 0 means that light is not in use　　 - Data_Id 10: Add description meaning off bit 1-7 has changed　　 - Data_Id 12: Add variable Stand_Alone_Auth　　 - Data_Id 20: Deleted　　 - Data_Id 21-30: Specify what happens to value 0　　 - Data_Id 40-42: Field type is bcd2　　 - Data_Id 46: Deleted　　 - Data_Id 47: Deleted　　 - Data_Id 50-58: Write not allowed　　 - Data_Id 60: Rename to SW_Change_Personal_Nb　　 - Data_Id 70-72: Write allowed in state 1-9　　 - Changes for Meter Database (chapter 3.4):　　 - Address name abbreviation included　　 - Date_Id 1-2: 0 means not configured　　 - Date_Id 4: Add description　　 - Date_Id 5: Deleted　　 - Date_Id 20: Totals are not resetable totals are updated permanently　　 - Changes for Product Database (chapter 3.5):　　 - Address name abbreviation included　　 - Database access only with PR_ID　　 - Description changed　　 - Date_Id 1: Deleted　　 - Date_Id 2: Description changed　　 - Changes for Product per Fuellin fuel dispenser fuel dispenser

ure and tortuous bureaucratic regulations fuel dispenser . Since then, India has looked enviously at China s far larger and more successful zones. India is at last moving into a bigger league. New laws allow for zones on virgin sites that range upwards from a minimum of 10 hectares (24 acres) for businesses such as software and bio-technology, to 1,000 hectares for multi-sector zones that might involve more than one developer and would include residential areas, hospitals, shopping centres and other amenities. Land will often be provided by state governments at concessionary rates, and both developers and operating units can receive tax breaks for up to 15 years, provided they are export-oriented. The aim is to boost industrial investment and exports, while persuading the private sector to build social infrastructure that the states cannot afford. One example, announced this week, is a $5.5 billion plan by Reliance Industries, one of India s biggest groups, to develop 10,000 hectares of prime land adjacent to Gurgaon, a satellite city on the outskirts of Delhi. There are already rows, though, about the price it is paying. Reliance has similar plans in Mumbai. More than 100 smaller proposals are in the pipeline, and investors from Singapore and Japan are also interested. Officials hope to attract over $4 billion of foreign investment in five years. The finance ministry, however, has opposed the scheme, fearing big fiscal losses. “Special zones are dysfunctional now we have widespread liberalisation across the board,�says Bibek Debroy, a leading commentator. A larger and cheaper plan is now being touted by the industry ministry for industrial areas of 100-250 square km (10,000-25,000 hectares)—approaching the size of Shenzhen in China. These could embrace existing industrial areas. Like Noida, which has been developed to the east of Delhi, they would be run by statutory authorities set up by state governments, which would relax bureaucratic controls and could ease restrictions such as labour l fuel dispenser fuel dispenser