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   800-556-3484    Sales and service of Nordson EFD dispensing systems are available worldwide.

781Mini Series Spray Valve

6

Specifications

NOTE:

 Specifications and technical details are subject to engineering changes without prior notification.

Item

Specification

Size

71.4 mm length x 22.4 mm diameter 
(2.8 x 0.9")

Weight

141 g (5 oz)

Actuating air pressure required

4.8–6.2 bar (70–90 psi)

Maximum fluid pressure

7.0 bar (100 psi)

Fluid inlet

M5

Mounting

M4

Cycle rate

Exceeds 400 per minute

Actuating air inlet

4 mm OD tubing, barb fitting

Air cylinder body

303 stainless steel

Fluid body

303 stainless steel

Air cap

303 stainless steel

Piston

303 stainless steel

Needle

303 stainless steel

Maximum operating temperature 102º C (215º F)

All stainless steel valve parts are passivated.
US Patent No. 9,816,849 for QR clasp.

Operating Features

Adjustable cap with stroke control knob for 
additional calibration

90° air inlet 
push-in fitting 

Air cylinder body

90° fluid inlet fitting 

(included)

Straight fluid inlet 

fitting (included)

QR clasp

Fluid body

Retaining nut / 
air cap / nozzle 
assembly

Содержание 781Mini Series

Страница 1: ...781Mini Series Spray Valve Operating Manual Electronic pdf files of Nordson EFD manuals are also available at www nordsonefd com...

Страница 2: ...dispensing experience Most questions you will have are answered in this manual However if you need assistance please do not hesitate to contact EFD or your authorized EFD distributor Detailed contact...

Страница 3: ...pecifications 6 Operating Features 6 Installation 7 Mounting the Valve on the Dispensing Equipment 7 Installing a 90 Fluid Inlet Fitting 7 Making the System Connections 8 ValveMate 8040 System with a...

Страница 4: ...can be removed in seconds for fast change out and easy cleaning and maintenance of the valve s wetted parts How the 781Mini Valve Operates Input air pressure at 4 8 bar 70 psi retracts the piston and...

Страница 5: ...of valve output for maximum end user convenience and efficiency The ValveMate 8040 controller puts push button adjustment of valve open time where it needs to be at the valve The ValveMate 8040 featu...

Страница 6: ...psi Fluid inlet M5 Mounting M4 Cycle rate Exceeds 400 per minute Actuating air inlet 4 mm OD tubing barb fitting Air cylinder body 303 stainless steel Fluid body 303 stainless steel Air cap 303 stain...

Страница 7: ...ws a Partially thread the QR clasp thumbscrew into the air cylinder body b When the thumbscrew is engaged rotate the fluid body to the required alignment based on the use of a 90 fluid inlet fitting c...

Страница 8: ...w viscosity fluids fill the reservoir after installing it on the fluid inlet fitting NOTE Fill syringe barrel reservoirs no more than 2 3 full 4 Attach the syringe barrel adapter to the barrel reservo...

Страница 9: ...he adapter to the fluid pressure regulator air line 5 Set the fluid pressure regulator to low for thin fluids and higher for thick fluids 6 Use the MODE button on the ValveMate controller to place the...

Страница 10: ...t bottoms out If the zero on the reference ring does not match up with the reference mark on the actuator body adjustment is needed 3 Use a wrench to loosen the set screw 4 Turn only the stroke refere...

Страница 11: ...ved 4 Turn the QR clasp thumbscrew counterclockwise to disengage the clasp 5 Carefully move the fluid body downward until it clears the needle and piston assembly 6 Remove the double stacked O rings f...

Страница 12: ...ng in the fluid inlet side of the fluid body If installing a 90 fluid inlet fitting refer to Installing a 90 Fluid Inlet Fitting on page 7 to install the fitting in the desired orientation Return here...

Страница 13: ...luid body to the required alignment c Finger tighten the thumbscrew to fully secure fluid body to the air cylinder 8 Reconnect the actuating air nozzle air and fluid supply to the valve 9 Turn the str...

Страница 14: ...edle is very sharp Handle it cautiously to prevent injury CAUTION Do not grasp the needle with pliers Doing so can damage the needle 6 Carefully pull the needle and piston assembly out of the air cyli...

Страница 15: ...the needle and piston assembly and the nozzle together if one of these components is damaged or worn Lubricate O rings with the supplied fluorocarbon grease P N 7014917 only if the assembly fluid bei...

Страница 16: ...s spring and retaining ring 7028737 U cup seal Double stacked O rings 7361407 Viton brown 7361408 EPR black 7361409 Silicone orange 7020671 M5 fluid inlet fitting with barb Valve Part Numbers Part Des...

Страница 17: ...worn or damaged parts Fluid flows from the nozzle but will not spray Nozzle air pressure too low Increase the nozzle air pressure Air passage between nozzle and air cap obstructed Remove the air cap...

Страница 18: ...or one year from date of purchase to be free from defects in material and workmanship but not against damage caused by misuse abrasion corrosion negligence accident faulty installation or by dispensin...

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