U102-B Gear Pump

U102-B Gear Pump

Materials:

Body: Aluminum (Spray-Painted)

seals: Buna-N

Technical Specifications:

Power:750-1000W

Flow Rate:45~90L/min

Rotary speed :630~730rpm

Noise:?8dB

Vacuum :>=0.054Mpa

Pressure Drop:0.12-0.25Mpa

Air separation ability:20%

Features :

Positive displacement,self priming,internal adjustable bypass valve

Designed for quiet, vibration-free operation.Reusable suction

strainer filter and reverse check valve inside adapted

Check and relief valve inside adapted

100% tested before Ex-Factory

Package:

Product ID Net Weight Cross Weight Dimension

U102-B 18kg/case of 1 18.5kg/case of 1 36×32× 30cm/case of 1

ank and fuel dispenser. It is incomprehensive to think that the higher vacuum pressure in inlet the better performance. Here is vacuum pressure of pump inlet formula: PZ = Pa－P1= P gh＋P [(υ1)2/2 ] = P ghf (2-9) PZ ── vacuum pressure of pump inlet Pa── absolute atmospheric pressure P1── absolute pressure of pump inlet g── acceleration of gravity h── height from pump inlet to oil level in tank υ1── velocity of pump inlet hf── energy loss in pipe from tank to pump inlet from formula 2-9, there are three exterior conditions depend vacuum pressure of pump: pressure needed to lift oil, σgh; the pressure that used to increase flow velocity, P [(υ1)2/2 ]; the pressure loss in pipeline, P ghf . Once oil contains air, along with pressure decrease, more air is separated. So dose that along with inlet vacuum pressure increases. Under there conditions, cavitation would occur in pipeline, causing pump’s normal oper fuel dispenser ation. In order t fuel dispenser o prevent above disadvantage effects, pay much attentions to installation of pipeline: ①tank should not be burred too deeply, the vertical distance from bottom valve to fuel dispenser no more than 4m, for example, regulated by some manufacturers with the purpose to prevent higher vacuum pressure of pump inlet; �?the diameter of pipe should not too small. As flow velocity correlate to section of pipeline, vacuum pressure at inlet of pump will be increased when high velocity in smaller diameter pipe; adopt as few as elbow in pipeline, preventing the connection with different diameter pipe, adopt pipe with smooth pipe wall. Rational installation of pipeline between tank and fuel dispenser benefit avoiding cavition and reduce vacuum pressure of pump inlet, which is also conducive to deduct busi fuel dispenser ness cost and power consumption. The unreasonable pipeline installation not only results in suction difficulty but also easily generate no suction in hot whether, increasing power loss. The wrong installation also leads to larg

(b) Checking now moves to Data_Lg if the length of the data element (Data_El) is too　　 big or too small a Data_Ack of 01 is returned. For example the data element may be 3　　 bytes instead of the correct length of 2.　　 (c) Now Data_El is checked if the value of the data element is too big or too small a　　 Data_Ack of 01 is returned. For example the valid range for the data element is 1 to 8　　 but the value of Data_El is 9.　　 3. If the Data_Id is a valid Command the order of checking is as follows:　　 (a) make sure this Command can be executed in the current device State. If not the　　 Command is refused with a Data_Ack 03.　　 (b) Checking now moves to Data_Lg (remember checking is from the left) check　　 Data_Lg is 00. If the Command format is correct. At this point the application has　　 recognised the Write as a valid fuel dispenser Command but it may fuel dispenser not have been implemented in　　 this device in which case a Data_Ack of 05 is returned.　　 If Data_Lg is not 00 then a Data_Ack of 05 is returned. A possible explanation for　　 this may be the Originator message is trying to write data to a Command.　　 (c) Finally the State is valid and Command is valid but the application refuses the　　 Command in this case a Data_Ack of 06 is returned. A number of examples of this　　 situation can be found in the dispenser standard. One such example is:　　 If a Release Command is sent to a Fuelling Point that does not have the product unit　　 price set the Release Command will be rejected with a Data_Ack of 06.　　FP2_1.90 IFSF STAN fuel dispenser DARD FORECOURT PROTOCOL February 2006　　 COMMUNICATION SPECIFICATION　　INTERNATIONAL FORECOURT STANDARDS FORUM　　 STANDARD FORECOURT PROTOCOL

ment. Against that background, the quiet word in the ear was tried at Vodafone and failed, mainly because both board and shareholders were divided. Some investors did speak privately with its chairman, Lord MacLaurin, but got little joy. Lord MacLaurin was on his way out and happy to leave the decisions on Mr Sarin s future to his successor, Sir John Bond, the former head of HSBC who took over this week. Nor were powerful shareholders united. Vodafone s problems are well known—the company announced a £22 billion ($41.2 billion) annual loss in May—but solutions to them are less clear. Institutions such as Legal & General, an insurer that owns 3.7%, argued that it would be unwise to change the chief executive and chairman at the same time. In the event, the rebels failed to carry the day in open confrontation too. But then, they had not expected to. “The purpose wasn t to oust Arun Sarin then and there,�?says Anita Skipper of Morley. “The pu fuel dispenser rpose was to say to fuel dispenser John Bond that there are concerns. The change in tone and tactics at Vodafone suggests that relations between British companies and their owners may become more testy in coming years. Whether this will lead to better performance remains to be seen. But it bodes ill for the quality of the sandwiches they serve. © 2006 .  About sponsorship Northern Ireland Rough justice Jul 27th 2006 | BELFAST From The Economist print edition One obstacle to restoring devolved government is crumbling BRITAIN s MPs go on holiday this week with their return-to-work dates in their diaries. Not so in Northern Ireland, where the 108 elected legislators have been warned to put their staff on notice. Unless the p fuel dispenser olitical parties agree to share power by November 24th, the entire Stormont Assembly will be sacked, devolution will be suspended and direct rule from Westminster, in consultation with Dublin, will prevail until further notice. A major st