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Summary of Contents for Emerson Daniel 700B Series
- Page 1 Operating and Maintenance Instructions Part N um ber- 3-9008-556 Revision D Decem ber 2012 Daniel Model 788 DVC digital control valves 2", 3", 4", 6" and 8" sizes...
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- Page 3 Important safety instructions Daniel Measurement and Control, Inc. (Daniel) designs, manufactures and tests products to function within specific conditions. Because these products are sophisticated technical instruments, it is important that the owner and operation personnel strictly adhere both to the information printed on the product nameplate and to all instructions provided in this manual prior to installation, operation, and maintenance.
- Page 4 Product operation personnel: • To prevent personal injury, personnel must follow all instructions of this manual prior to and during operation of the product. • Follow all warnings, cautions, and notices marked on, and supplied with, this product. • Verify that this is the correct instruction manual for your Daniel product. If this is not the correct documentation, contact Daniel at 1-713-827-6314.
- Page 5 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 death or serious injury. Caution indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
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- Page 7 MAY BE TRADEM ARKS/REGISTERED TRADEM ARKS OF THESE COMPANIES. DANIEL AND THE DANIEL LOGO ARE REGISTERED TRADEMARKS OF DANIEL INDUSTRIES, INC. THE EMERSON LOGO IS A TRADEMARK AND SERVICE MARK OF EMERSON ELECTRIC CO. COPYRIGHT © 2012 BY DANIEL MEASUREMENT AND CONTROL, INC.
- Page 8 Warranty and limitation of liability 1. LIM ITED W ARRANTY: Subject to the limitations contained in Section 2 herein, Daniel Measurement & Control, Inc. (“Daniel”) warrants that the licensed firmware embodied in the Goods will execute the programming instructions provided by Daniel, and that the Goods manufactured by Daniel will be free from defects in materials or workmanship under normal use and care and Services will be performed by trained personnel using proper equipment and instrumentation for the particular Service provided.
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Page 9: Table Of Contents
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 TABLE OF CONTENTS INTRODUCTION ........... . . 1-1 Aggressive Products . - Page 10 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figures Closed Position ............2-2 Open - Control Position .
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Page 11: Introduction
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 INTRODUCTION The Daniel Model 788DVC Digital Control Valve is a solenoid operated device designed to provide precise flow rate control and batch delivery of liquid products. It is used in conjunction with an electronic batch control device such as the Daniel DL8000. -
Page 12: Principle Of Operation
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Principle of Operation Operation of the Model 788DVC Digital Control Valve is based on a balanced piston principle. When pressure on both sides of the main valve piston are equal, a spring (located on the top of the piston) acts as a differential force and closed the main valve piston. -
Page 13: Theory Of Operation
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 THEORY OF OPERATION The Model 700B Series Control Valve operates on a balanced-piston principle. When pressures on both sides of the piston are equalized, a spring located on top of the piston acts as a differential force and closes the piston. -
Page 14: Closed Position
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 CLOSED POSITION - The normally closed solenoid is closed. The normally open solenoid is open. Y-port (P3) to Z-port (P2) is closed. X-port (P1) and Y-port (P3) pressures are balanced. The main valve spring being the differential force, closes the piston and keeps it seated. -
Page 15: Open - Control Position
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 OPEN - CONTROL POSITION - The normally closed solenoid is closed. The normally open solenoid is closed. Y-Port (P3) to Z-port (P2) is closed. X-port (P1) to Y-port (P3) is closed. The product cannot flow to or from the top of the piston. -
Page 16: Open Position (No Control)
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 OPEN POSITION - (no control) - The normally closed solenoid is open. The normally open solenoid is closed. Y-port (P3) is open to Z-port (P2). X-port (P1) is closed off by the normally open solenoid. The pressure on the bottom of the piston (P1) is greater than the pressure at (P3) plus the spring force;... -
Page 17: Specifications
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 SPECIFICATIONS PERSONAL INJURY AND/OR EQUIPMENT DAMAGE Do not exceed specifications listed below. Failure to heed this warning could result in serious injury and/or damage to the equipment. Pressure Class 150 lb., 300 lb., or 600 lb. ANSI steel DIN PN 16, 40, 64, and 100 Safe Working Temperature Ranges Standard: -20 F, -29 C to 150 F, 66 C... -
Page 18: Flow Vs Pressure Drop
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 INMETRO Certification: Certificate Number: NCC 12.1244 X INMETRO Marking: Ex d nC IIB T3 Gc Ex d IIC T* Gb *See Tables 1 and 2 in the certificate for temperature range details. Special condition for safe use: When the digital control valve is assembled with solenoid models 80174, 80173, 80143, 80144, HP80143, 8014G2 and F8003G1, the temperature of the process fluid must not be greater than 40°C. - Page 19 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 The main valve is full open when curves B, C, and D intersect Curve A. After they intersect, continue reading pressure drop curve from curve A. In applications requiring a constant pressure drop over 40 psid a heavy main valve spring must be used.
- Page 20 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Materials of Construction Main Valve Body steel, ASTM-352 LCC Cylinder Head steel, ASTM-352 LCC Main Valve Cylinder steel nickel coated steel Main Valve Piston Standard: stainless steel Seat Ring steel nickel coated steel Seals steel...
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Page 21: Specifications
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 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) Voltage* Current (Inrush) Current Holding 110/50 Vac 0.71 amps 0.37 amps... -
Page 22: Maximum Working Pressure
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Table 3-2. Maximum Working Pressure Pressure/Temperature ASTM A352 LCC WCB 150# ANSI/-20 to 100 F 285 psig WP 150# ANSI/150 F 272 psig WP 150# ANSI/250 F 245 psig WP 150# ANSI/450 F 185 psig WP 300# ANSI/-20 to 100 F... - Page 23 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figure 3-2. Dimensions SPECIFICATIONS...
- Page 24 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Table 3-3. Dimensions (see Figure 3-2) Valve Size 150# ANSI 300# ANSI No Indicator With Indicator 2" 10-1/4" 10-1/2" 9" 11" 8.25" 260 mm 267 mm 229 mm 279 mm 210 mm 3"...
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Page 25: Installation And Maintenance
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 INSTALLATION AND MAINTENANCE The most common application of the Daniel Model 788DVC Digital Control Valve is for truck loading of petroleum products. The valve may be used with a variety of flow meter types, including Coriolis and turbine meters, as shown in Figure 4-1. -
Page 26: Equipment Damage
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 EQUIPMENT DAMAGE It is recommended that the external pump control be turned to the OFF position when performing any electrical wiring installation and until initial control valve adjustments are made in the DL8000. Failure to comply with these procedures could result in damage to the equipment and compromise in the integrity of the operation. - Page 27 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 The Daniel valve may be installed with a flow direction horizontal or vertical up but should never be installed with flow direction vertical down. When installed in a horizontal line, the valve should be installed so that the cylinder head is at the top of the valve and not the bottom.
- Page 28 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figure 4-1. Typical Application - Top Loading INSTALLATION AND MAINTENANCE...
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Page 29: Typical Application - Bottom Loading
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figure 4-2. Typical Application - Bottom Loading INSTALLATION AND MAINTENANCE... -
Page 30: Control Valve Configuration (New For Dl8000)
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figure 4-3. Control Valve Configuration (new for DL8000) INSTALLATION AND MAINTENANCE... -
Page 31: Cylinder Disassembly And Reassembly
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 CYLINDER DISASSEMBLY AND REASSEMBLY The following tools will be needed to disassemble and reassemble your control valve: • socket wrench • adjustable wrench • T-handle or extended Allen wrench • arbor press (may be needed for 4- and 6-inch valves) •... -
Page 32: Cylinder Disassembly
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Cylinder Disassembly Refer to Figure 5-2. PERSONAL INJURY AND/OR EQUIPMENT DAMAGE Caution is required when performing any disassembly procedure as the Cylinder head is bolted to a spring loaded cylinder assembly. Service should only be performed by trained and qualified service personnel. -
Page 33: Using The Piston To Insert The Seat Ring Into The 150/300 Lb. Cylinder
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Lift off the cylinder head by taking out the socket screws. 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 Table 5-l. -
Page 34: Cylinder Reassembly
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Cylinder Reassembly Refer to Figure 5-2. Inspect all O-rings for wear and damage and replace as required. If removed, attach the cylinder head to the main cylinder body. Insert the valve spring into the cylinder housing. Inspect and position the piston into the cylinder housing. - Page 35 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Cup-seal Replacement on Existing “AP” Option Piston If your Daniel Valve is being modified to accommodate applications requiring the use of aggressive products used in petroleum blending operations, the following procedures should be followed in retrofitting your valve.
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Page 36: Option Assembly
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figure 5-3. Option Assembly DISASSEMBLY AND REASSEMBLY... - Page 37 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 5.4.2 To upgrade existing valves having the original “AP” option (received prior to September 1992), the following parts have been supplied as a separate kit: - washers (29) - Stat-O-Seals (30) - one gasket (31) - three O-rings (replaces existing O-rings (3) and (4) of the same part numbers.) Reference Figure 7-1 for complete valve part numbers.
- Page 38 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 PERSONAL INJURY AND/OR EQUIPMENT DAMAGE Caution is required when performing any disassembly procedure as the Cylinder head is bolted to a spring loaded cylinder assembly. Service should only be performed by trained and qualified service personnel.
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Page 39: Troubleshooting
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 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 practice to periodically remove the pilot from the valve and inspect it for accumulation of these materials. -
Page 40: Troubleshooting
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Table 6-1 provides information for identifying and correcting operational problems you may experience with your control valve. Please keep in mind this information is not exhaustive and that system abnormalities may result from causes other than valve error. This information is provided to assist in general field repairs. - Page 41 TRADEMARKS: Daniel ..... . Daniel, a division of Emerson Process Management Kalrez ® ....... .
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Page 42: Parts List
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Table 7-1. Parts List - 2", 3", 4", 6", 8" Sizes Item Description 2-inch 3-inch 4-inch 6-inch 8-inch valve body - in line 521001 531001 541001 561001 581001 150 ANSI steel solenoid (N.C.) 110/50, 120/60 456800-612... - Page 43 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Item Description 2-inch 3-inch 4-inch 6-inch 8-inch O-ring/Buna-N 157079 150727 150727 ® O-ring/Viton 157079-022 157078-022 157061-022 O-ring/EPR 157079-005 157078-005 157061-005 O-ring/Buna-N 152067 152070 152070 ® O-ring/Viton 152067-022 152070-022 152070-022 O-ring/EPR 152067-055 152070-005 152070-005...
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Page 44: Valve Cylinder Assembly
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES D E C 2012 Figure 7-1. Valve Cylinder Assembly PARTS LIST... - Page 45 Daniel Measurement and Control, Inc. Returned Material Authorization Repair Form for Used Equipment Including Decontamination/Cleaning Statement A Return Material Authorization (RMA) number must be obtained prior to returning any equipment for any reason. Download the RMA form from the Support Services web page by selecting the link below.
- Page 46 Shipping Requirements 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.
- Page 48 Em erson Process M anagem ent Daniel M easurem ent and Control, Inc. 11100 Brittm oore Park Drive H ouston, TX 77041 T+1 713-467-6000 F+1 713-827-4805 w w w .em erson.com Copyright© 2012 Daniel M easurem ent and Control, Inc. and Daniel M easurem ent Services, Inc. Divisions of Em erson Process M anagem ent reserve the right to m ake changes to any of its products or services at any tim e w ithout prior notification in order to im prove that product or service and to supply the best product or service possible.
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