Volume rate of flow of liquid, expressed in cubic metershr m. Pump guidebooks are available in hardcopy or secure pdf format. Api standards for pump design, operation and maintenance. Including service factor, nameplate horse power rating shall be 10 % higher than horse power at relieve valve setting. Extensive motor mount and pipe connection options are available for process compatibility and simple integration into. Manual calibration with a column is made easier and. Remote control stations are available for localremote selection and manual. This standard covers the minimum requirements for reciprocating, controlled volume pumps and pump units for use in the petroleum, petrochemical, and gas industry services. Reciprocating pump selection industrial professionals. Petroleum institute for controlled volume meteringdosing pumps. This standard covers the minimum requirements for reciprocating, controlled volume pumps and pump units for use in the petroleum. Api 675 ref 3% of maximum flow over a turndown ratio of 10. An api 675 pump model to do these hydraulics will cost a fortune and is not needed. Npsha calculation for metering pump posted in industrial professionals.
Positive displacement pumps controlled volume for petroleum, chemical, and gas industry services. The term metering pump is based on the application or use rather than the exact kind of pump used, although a couple types of pumps are far more suitable than most other. The american petroleum institute api has the api 675 standard for controlled volume positive displacement pumps to which many pump manufactures comply. Reciprocating controlled volume pumps are capable of handling very low flows volume diaphragm pump for normal corrosive or toxic chemicals and light slurries with viscosities up to 200 s. Pa absolute pressure at surface of liquid in kpa absolute.
Metering pumps differ in that the pumping rates can be varied by changing the effective stroke length and changing the speed. Providing protection for positive displacement pumps and metering pumps. Metering pumps are generally used in applications where one or more of the. This standard is written by the american petroleum institute for controlled volume meteringdosing pumps. Api 675 plunger and double diaphragm metering process pumps, designed to assure the greatest reliability in heavy duties. Doxa api 675 controlled volume pumps plunger and double. When api675 is specified for controlled volume pump, power rating on motor nameplate shall be at least 110 % of greatest horse power including gear and coupling losses, excluding service factor of motor. Api 675 the pumps are made in a state of the art facility in irvine, california, usa. Ability to adjust flow while pump is running overall ease and simplicity of installation and operation. As per appendix e net positive suction head versus net positive inlet pressure of api std 675 1994 page 37, npip net positive inlet pressure available is determined as follows. Api 675 is a comprehensive standard issued by the american petroleum institute api that is intended to provide a purchase specification covering controlled volume, positive displacement pd pumps for petroleum, chemical and gas industry services. Api 614 lubrication shaft sealing and controlled oil systems.
Calculation of the maximum operating pressure for a power end of a piston or plunger pump based off of the rated rod load. Type of water and foam pumps used for fire fighting. Assume this is for your methanol where you should also be employing the ircd flow distribution. Metering pumps contain special adaptations of the conventional reciprocating pump, which are designed primarily to transfer liquid at an accurately controlled rate.
Use this framework to agree on the design, fabrication and testing of a metering pump. Hi guys, l have question regarding controlled volume pumpapi 675 i am preparing controlled volume pump datasheet. It requires the hydraulically balanced diaphragm pumps to meet certain minimum requirements for life. Calculation of horsepower based off of flow rate, pressure, and efficiency. Controlled volume pumps, hydraulically driven pumps and positive displacement reciprocating pumps are not included see api 674 for positive displacement reciprocating. Diaphgram pump that use direct mechanical actuation are excluded. Wanner api 675 is the specification for controlled volume, positive displacement pumps for use in service in the petroleum, chemical, and gas industries but is increasingly being adopted as the general industry specification for metering and dosing pumps. Chemical dosing and blending the role of precision actuators. Pulsar metering pumps and controls represent a generation leap in chemical feed technology. A controlled volume is dispensed through an inline metering chamber by cyclically.
Api 675 double diaphragm metering pumps, versatile, high efficiency precise and noiseless with intermediate hydraulic control circuit, characterized by thei. A metering pump moves a precise volume of liquid in a specified time period providing an accurate volumetric flow rate. Positive displacement pump design and calculation tajilapak. Type of controlled volume pump shall be specified in. Api std 675 positive displacement pumps controlled. These pumps are either hydraulic diaphragm or packed plunger design. Hydraulic diaphragm hydraulic double diaphragm 5 api 675. Api std 675 complete document 3rd edition, june 14. The macroy series of metering pumps offer milton roy reliability with outstanding value for applications up to 175 psi 12 bar. The pump meets standards for ce, atex, and api 675. Api standard 675 for positive displacement pumps pumps. If purchaser decides not to witness the relevant feature, production can proceed without permission of purchaser. In addition to its complete range of api 675 controlled volume pumps, omg.
Select from a number of titles covering a multitude of various topics such as optimizing pumping systems, mechanical seals, wastewater treatment plant pumps, reliability of pumping equipment, variable frequency drives, power plant pumps, and pump life cycle costs. American petroleum institute api list your products or services on engineering360. Assuming so, you dont need the api675 adjustable stroke flow feature as thats handled via the ircd system. Hydracell metering solutions performance against api 675. When api 675 is specified for controlled volume pump, power rating on motor nameplate shall be at least 110 % of greatest horse power including gear and coupling losses, excluding service factor of motor. The pump shall be capable of accepting manual or automatic capacity stroke control. These pumps are also known as proportioning, chemical injection, dosing or metering pumps. Flow capacity rate of a centrifugal pump at which efficiency is maximum. Hi guys, l have question regarding controlled volume pump api 675 i am preparing controlled volume pump datasheet. Aug 05, 2015 positive displacement pumps controlled volume for petroleum, chemical, and gas industry services technical requirements api 675 4. Metering pumps enable you to meet and, in most cases, exceed api 675 performance standards with virtually pulseless, linear flow while providing many other operational benefits. Dec 12, 2012 reciprocating controlled volume pumps are capable of handling very low flows api 674. Hold point implies that relevant production activities shall not proceed until the continuation of work is permitted by purchaser.
Pump selection guidelines october 20 process industry practices page 4 of 58. Nov 12, 2016 how to design positive displacement pump. It includes all definitions for a diaphragm metering pump in industrial use in terms of its design, construction, performance and acceptance test. Calculation of the flow rate of a plunger or piston pump based off of standard, measurable dimensions of a the pump. The ecoflow series fulfills the internationally valid quality standard of the american petroleum institute api 675. The metering pump is a positive displacement chemical dosing device with the. Both packedplunger and diaphgram types are included. Api 675 standard covers the minimum requirement for controlled volume positive displacement pumps for use in service in petroleum, chemical, and gas industries. Figure 21 shows a generic process with a positive displacement pump in this case a gear pump connected to deliver liquid from a to b. Doxa api 675 plunger and double diaphragm metering process pumps by officine meccaniche gallaratesi s. Api std 675 positive displacement pumpscontrolled volume for petroleum, chemical, and gas industry services. Learn about the basics of metering pump technology and an overview of milton roys comprehensive controlled volume metering pump offering. Positive displacement pumps controlled volume for petroleum.
Metering or controlled volume pumps should comply with api 675. Liquid end bleed system makes it easier to commission a new or a newly maintained pump. Controlled volume pump a reciprocating pump in which precise volume control is provided by varying effective stroke length. Extensive motor mount and pipe connection options are available for process compatibility and simple integration into chemical injection systems. Api 675 metering pumps dynapumps offers you an unrivaled range of metering pumps for practically every application in which liquids have to be measured and mixed together. Api std 675 positive displacement pumpscontrolled volume for petroleum, chemical, and gas industry services, 3rd edition, includes errata june 2014 standard by american petroleum institute, 11012012 amendments available. The performance parameters belonging to the bep represent the criteria for an optimum utilization of the pump, around which the recommended range of operation is indicated.
The xpd 676 series from viking pump was specifically designed to be in full compliance with every detail of apis. Controlledvolume pumps, hydraulically driven pumps and positive displacement reciprocating pumps are not included see api 674 for positive displacement reciprocating. Both directacting and powerframe types are included. Witness point implies that purchaser intends to witness the designated inspection feature. An api675 pump model to do these hydraulics will cost a fortune and is not needed. Covers the minimum requirements for reciprocating, controlled volume pumps, and pump units for use in the petroleum, petrochemical, and gas industry services. Api std 675 positive displacement pumps controlled volume for petroleum, chemical, and gas industry services.
Controlledvolume pumps, hydraulically driven pumps, and rotary pumps are not included. Includes all amendments and changes through errata, april 2015. Api 675 positive displacement controlled volume pumps. Browse related products from american petroleum institute. This amreican petroleum institute standard covers the minimum requirements for reciprocating, controlled volume pumps and pump units for use in the petroleum, petrochemical, and gas industry services. Assuming so, you dont need the api 675 adjustable stroke flow feature as thats handled via the ircd system. Siphon pump metering is now repeatable with a high level of accuracy and control with flow control at the crown or bend of the siphon conduit. This standard covers the minimum requirements for rotary positive displacement process pumps and pump units for use in the petroleum, petrochemical, and gas industry services. The standard covers hydraulically actuated and packed plunger metering pumps. The manufacturing process we have in place emphasizes flexibility and agility to accommodate market requirements rapidly. A piston pump equipped with a rotork cma modulating electric actuator for injection duty.
Api 675 metering pumps dynamic pump and vacuum solutions. Positive displacement pumpscontrolled volume for petroleum, chemical, and gas industry services, 3rd edition, includes errata june 2014. Pdf positive displacement pumpscontrolled volume mandana. It has the same function, namely to provide the pressure necessary to move a liquid at the desired rate from point a to point b of the process. Api 675 controlledvolume diaphragm pumps pump engineering. Learn about the basics of metering pump technology and an overview of milton roys comprehensive controlledvolume metering pump offering. Controlled volume metering pump hydraulic institute require high accurate, repeatable, and adjustable rate of flow. The api 676 design standard applies to rotary positive displacement pumps like viking internal gear pumps. Pump performance curves include the head developed by the pump, the power required to drive the pump, and the efficiency of the pump, all in the function of the pumping rate.
Api std 675 positive displacement pumps controlled volume. Advantages and disadvantages of helicoaxial and twin rotor pumps. Positive displacement pumpscontrolled volume for petroleum, chemical, and gas industry services api std 675 3rd edition november 2012 covers the minimum requirements for reciprocating, controlled volume pumps, and pump units for use in the petroleum, petrochemical, and gas industry services. Mar 30, 2018 controlled volume pump a reciprocating pump in which precise volume control is provided by varying effective stroke length. Power up your operation with our api 675 metering pump specifically designed to deliver greater flow and higher pressure ranges.
Idrodox api 675 double diaphragm metering pumps by officine meccaniche gallaratesi s. The manufacturing process we have in place emphasizes flexibility and agility to. Delivery of fluids in precise adjustable flow rates is sometimes called metering. Testing a hydracell pump according to api 675 at wanner. It provides a framework for the manufacturer and purchaser to agree. Hence our fast deliveries delight customers who may have their process down for the lack of a pump. Positive displacement pumps controlled volume for petroleum, chemical, and gas industry services technical requirements api 675 4.