BV-303/Suck-back type dispensing valve
Contents
1. 15 BAN SEOK BAN SEOK PRECISION IND C O LTD EQUIPMENT User Manual BV 303 Suck back type dispensing valve Contents 1 A For your safety TT tn tie TT TK TT TN 1 2 Valve overuse harzard OA cs yc vies a A EA au TT 1 3 Others ANA Specification OACI Principle MU SECOS ODO DOLO CL OEE ECC CECE CCC OCTET CLE CECT e Installation amp Operation eee Ce Re 5 4 1 Connecting lines aaa cana aaa aia ana aaa aia aaa ada 4 2 Operation a a lo Maintenance a Cleaning ORO Tere ere ee CeT CEC ECCE ECCT ICO OTRO RIA RRA 5 1 Storing after USE eee 52 Check items while operating ns 5 3 Exploded view AN NA AS agar aval ee iwa ayau 5 4 Cleaning aia 7 55 List of spare parts ir ys CG eet Cs ts E Trouble shooting on UA AAA Outside view OOOO OOOO OOOO IATA 1 Safety A Before installation and using our dispensing valve BV 303 please be carefully aware of this user manual 1 1 For your safety v Ifthe fluid splashes up to your eyes or skin it can cause a serious injury Y Handle with extreme care not to be in contact with liquid in case of nozzle exchange or cleaning v Make sure that pressure must be released before the nozzle is removed when you exchange a nozzle 1 2 Valve Overuse Hazard Y Ifa valve is damaged due to over pressure unauthorized alteration of parts and overuse it may cause a danger by exploding or leaking explosion or leakage may occur v Do not make any kind of unauthorized alterations We are not respo2. erent of the space which is get the piston head moves down And the valve is suitable for large amount per shot 4 Installation amp Operation 4 1 Connecting Lines 1 Connecting Air pressure lines Straightly insert the tube into the air fitting until it gets installed inside Valve open line A is connected to the open port on the TAD 200V controller Valve close line B is connected to the air out port on the TAD 200V controller Pull the tube gently in order to make sure that it is safe 2 Connecting Fluid Line The inlet of Fluid line C fits in PT 1 8 line 3 Caution When you cut the tube make the severed side a right angled out and the use of a tube cutter is recommended Install the fluid line in oblique with the air line in order to minimize the intervention 4 2 Operation 1 Preparing to use Open the fluid line and valve open air line A of the valve Keep dispensing until the consistent drippings in order to eleminates the air in the valve And then stop dispensing 2 Control of the dispensing volume Adjust the pressure of fluid inlet Change the nozzle tip D to be compatible to preventing from air bubbles 5 Maintenance amp Cleaning 5 1 Storing after use To avoid the nozzle tip contact air put an end cap on the nozzle or keep a nozzle in the grease Perform the cleaning process see Chapter 5 4 5 2 Check items while operati
3. lean the valve see chapter 5 4 And then replace outlet seal 3 fasten the adapter 1 Fluid leakage from Joint nut 9 The joint nut 9 is unfasten The lifetime of o ring housing 6 o ring 7 and plate seal 8 is end Clean the valve see chapter 5 4 And then replace o ring housing 6 o ring 7 and plate seal 8 fasten the joint nut 9 The stop pin 4 is worn out Replace the stop pin 4 7 Outside view
4. ng Make sure that air supply is in good condition Check other connecting appliances that are properly turned off Be sure that end of nozzle is not clogged with hardened fluid 5 3 Exploded view The user s arbitrary disassembly is not recommended 1 Fluid outlet tip adapter BS 9 Joint nut BS 2 Holder cap A6061 10 Stop nut BS 3 Outlet seal Teflon 11 O ring P8 4 Stop pin SUS303 12 O ring P18 5 Body casing A6061 13 Piston SUS303 6 O ring housing Teflon 14 O ring P22 7 O ring P4 15 End cap A6061 8 Plate seal Teflon 5 4 Cleaning Stop providing liquid and release pressure in the fluid chamber Connect the cleaning line to fluid inlet port and add pressure According to chapter 4 2 dispense cleaning liquid instead of fluid 5 5 List of spare parts No Name No Name 3 Outlet seal 8 Plate seal 4 Stop pin 11 O ring P8 6 O ring housing 12 O ring P18 7 O ring P4 14 O ring P22 6 Trouble shooting Item Cause Treatment No dispensing Fluid leakage from nozzle 1 Stop pin 4 does not work Supply the air into valve on off line The fluid is cured Clean the valve see chapter 5 4 The fluid does not supply The controller is turned off The needle adaptor 1 is unfasten Pressure the fluid reservoir The lifetime of outlet seal 3 is end Supply the fluid Turn on the controller C
5. nsible for any repairs after sales service caused by them Y This valve operates delivery air pressure under 7kgf cm Do not exceed this operation pressure Y The fluid pressure must not exceed 30kgf cm Or it can cause serious damages and disorder 1 3 Others Y High pressure material can be leaked if a hose is damaged or worn Y Check a hose for any worn downs damages or swollen before use Y Please change a hose immediately if any malfunction is found v Prevent leakage from loosened joints by tightening before use 2 Specification Method of Operation Suck back Material of wetting part A6061 Volume 8f min Type of Operation A B Liquid Input PT 1 8 Applied Materials Epoxy Silicone Urethane Engine oil Low amp Middle Viscous Materails Maximum fluid pressure 30 kg cm Output variation 2 0 3 Principle The valve open air pressure forces the internal piston to move down and the sealing head to open and permit fluid flow When the valve close air pressure forces the internal piston to move up and the sealing head closes stopping the fluid flow and pulling back a slight amount of fluid The amount of fluid dispensed will depend on the time the valve is open the viscosity of the fluid the air pressure in the fluid reservoir and the dispensing tip size Flow rate is a function of reservoir pressure tip size and fluid viscosity Suck back type valves have a sneakhead at the starting point due to the diff
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