Page 2 - This page intentionally left blank.
Page 3 - Important safety instructions; Do not allow untrained personnel to work with this product.
Important safety instructions Daniel Measurement and Control, Inc. (Daniel) designs, manufactures and tests products to functionwithin specific conditions. Because these products are sophisticated technical instruments, it isimportant that the owner and operation personnel strictly adhere both to th...
Page 5 - Safety signal words and symbols; Safety alert symbol
Safety signal words and symbols Pay special attention to the following signal words, safety alert symbols and statements: Indicates a hazardous situation which, if not avoided, will result in death or serious injury. Warning indicates a hazardous situation which, if not avoided, could result in deat...
Page 7 - N otice; B Y D A N IE L M E A SU R E M E N T A N D C O N T R O L , IN C .
N otice T H E C O N T E N T S O F T H IS P U B L IC A T IO N A R E P R E S E N T E D FO R IN F O R M A T IO N A L P U R P O S E S O N L Y , A N DW H IL E E V E R Y E F F O R T H A S B E E N M A D E T O E N S U R E T H E IR A C C U R A C Y , T H E Y A R E N O T T O B EC O N S T R U E D A S W A R R A ...
Page 8 - W arran ty an d lim itation of liab ility
W arran ty an d lim itation of liab ility 1 . L IM IT E D W A R R A N T Y : S u b je c t to the lim itatio n s c o ntaine d in S e c tio n 2 h e re in, D a n iel M e a su re m e n t & C o n tro l,I n c . ( “D a n ie l” ) w a r ra n ts th a t th e lic e n s e d fir m w a r e e m b o d ie d in th ...
Page 9 - TABLE OF CONTENTS
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM TABLE OF CONTENTS i TABLE OF CONTENTS 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.1 Aggressive Products . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 10 - -1 Troubleshooting
D E C 2 0 1 2 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES TM TABLE OF CONTENTS ii Figures 2-1 Closed Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-2 Open - Control Position . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 11 - INTRODUCTION; Aggressive Products
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM INTRODUCTION 1-1 1.0 INTRODUCTION The Daniel Model 788DVC Digital Control Valve is a solenoid operated device designed to TM provide precise flow rate control and batch delivery of liquid products. It is used in conjunction withan electroni...
Page 13 - THEORY OF OPERATION
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM THEORY OF OPERATION 2-1 2.0 THEORY OF OPERATION The Model 700B Series Control Valve operates on a balanced-piston principle. When pressures onboth sides of the piston are equalized, a spring located on top of the piston acts as a differenti...
Page 18 - SPECIFICATIONS; INMETRO Certification:; Connections; Valve Size
D E C 2 0 1 2 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES TM SPECIFICATIONS 3-2 INMETRO Certification: - Certificate Number: NCC 12.1244 X - INMETRO Marking: Ex d nC IIB T3 GcEx d IIC T* Gb *See Tables 1 and 2 in the certificate for temperature range details. Special condition for safe use: When the ...
Page 20 - Standard: stainless steel
D E C 2 0 1 2 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES TM SPECIFICATIONS 3-4 Materials of Construction Main Valve Body steel, ASTM-352 LCC Cylinder Head steel, ASTM-352 LCC Main Valve Cylinder steelnickel coated steel Main Valve Piston Standard: stainless steel Seat Ring steelnickel coated steel S...
Page 21 - stainless steel
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM SPECIFICATIONS 3-5 Other Internal Parts stainless steel Pilot Valve Body and Trim stainless steel Tubing steel or stainless steel Table 3-1. Solenoid Electrical Data (150 lb. MOPD) V o lta g e * C u r re n t ( In r u sh ) C u r re n t H o l...
Page 25 - INSTALLATION AND MAINTENANCE; Flow must be horizontal or vertical up but never vertical down.; Recommended Installation Instructions
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM INSTALLATION AND MAINTENANCE 4-1 4.0 INSTALLATION AND MAINTENANCE The most common application of the Daniel Model 788DVC Digital Control Valve is for truckloading of petroleum products. The valve may be used with a variety of flow meter typ...
Page 26 - Flush the line of any and all contaminates.; General Considerations as Applied to the DL8000
D E C 2 0 1 2 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES TM INSTALLATION AND MAINTENANCE 4-2 EQUIPMENT DAMAGE It is recommended that the external pump control be turned to the OFF position whenperforming any electrical wiring installation and until initial control valve adjustmentsare made in the DL...
Page 33 - DISASSEMBLY AND REASSEMBLY; Lift off the cylinder head by taking out the socket screws.
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM DISASSEMBLY AND REASSEMBLY 5-3 6. Lift off the cylinder head by taking out the socket screws. 7. Remove and inspect all O-rings for nicks, cuts and wear. Figure 5-1. Using the Piston to Insert the Seat Ring into the 150/300 lb. Cylinder Tab...
Page 34 - Inspect all O-rings for wear and damage and replace as required.
D E C 2 0 1 2 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES TM DISASSEMBLY AND REASSEMBLY 5-4 5.3 Cylinder Reassembly Refer to Figure 5-2. 1. Inspect all O-rings for wear and damage and replace as required. 2. If removed, attach the cylinder head to the main cylinder body. 3. Insert the valve spring in...
Page 37 - Reference Figure 7-1 for complete valve part numbers.
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM DISASSEMBLY AND REASSEMBLY 5-7 5.4.2 To upgrade existing valves having the original “AP” option (received prior to September1992), the following parts have been supplied as a separate kit: - washers (29)- Stat-O-Seals (30)- one gasket (31)-...
Page 39 - TROUBLESHOOTING
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM TROUBLESHOOTING 6-1 6.0 TROUBLESHOOTING The most frequent problem encountered with any control valve is the accumulation of sediment,rouge, scale and other foreign material in the pilot or its supply system. It is, therefore, good practicet...
Page 41 - PARTS LIST; Daniel; Daniel, a division of Emerson Process Management; Valve serial number
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM PARTS LIST 7-1 7.0 PARTS LIST Table 7-1 lists the replacement parts for 2- through 6-inch Model V2700-20 Series Control Valves.The item numbers in the parts list (Table 7-1) correspond with the sequence numbers in Figure 7-1. This section c...
Page 43 - * Recommended Spare Parts
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2 0 1 2 TM Item Description Qty 2-inch 3-inch 4-inch 6-inch 8-inch PARTS LIST 7-3 21 O-ring/Buna-NO-ring/Viton ® O-ring/EPR 1 --- ------ 157079157079-022157079-005 150727157078-022157078-005 150727157061-022157061-005 CFCFCF 22 O-ring/Buna-NO-ring/Vit...
Page 45 - Repair Form for Used Equipment
D aniel M easurement and C ontrol, Inc. TM R eturned M aterial A uthorization Repair Form for Used Equipment Including Decontamination/Cleaning Statement A Return Material Authorization (RMA) number must be obtained prior to returning any equipmentfor any reason. Download the RMA form from the Suppo...
Page 46 - S h ip p in g R equ irem ents; Write the RMA number on the shipping package.
S h ip p in g R equ irem ents Failure to comply with this procedure will result in the shipment being refused. 1. Write the RMA number on the shipping package. 2. Inside the package include one copy of this document and all required Material Safety Data Sheets (MSDS) 3. Outside of the package attach...
