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CV-210
User Manual
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Vindum CV Series, CV-405, CV-210, CV-410, CV-310 User Manual

...
CV-Series
High-Pressure Valves
USER GUIDE
369 Syringa Ridge Sandpoint, ID 83864
281.782.8312 www.vindum.com support@vindum.com
V:1.2 (3-07-17)
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Copyright 2005-2017
Vindum Engineering, Inc. All rights reserved. Reproducon or use of contents in any manner is prohibited without express permission from Vindum Engineering. While every precauon has been taken in the prepara­on of this manual, the publisher assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulng from use of the informaon contained herein.
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Table of Contents
Chapter 1 General Overview .................................................................................................. 1
1.1 Conguraon ............................................................................................................................ 1
1.2 Main O-Ring Seal Material ........................................................................................................ 1
1.3 Pressure Rang ......................................................................................................................... 1
1.4 Solenoid Pilot Valve .................................................................................................................. 2
1.5 Valve Temperature Rang ........................................................................................................ 2
1.6 Weed Parts ............................................................................................................................. 2
1.7 Everything you need to operate your CV Valve ........................................................................ 2
1.8 Addional Informaon .............................................................................................................. 3
1.8.1 CV Valve Models .................................................................................................. 3
1.8.2 CV Valve Size ....................................................................................................... 4
Chapter 2 Understanding Your Valve ................................................................................... 5
2.1 Principles of Operaon for the 2-Way Valve ............................................................................ 5
2.1.1 Possible Conguraons of the 2-Way Valve .................................................................. 5
2.1.2 Direcon of Flow ............................................................................................................ 5
2.2 Principles of Operaon for the 3-Way Valve ............................................................................ 5
2.2.1 Possible Conguraons of the 3-Way Valve .................................................................. 5
2.2.1.1 Open / Closed Posion (A1 / B2) ...................................................................... 6
2.2.1.2 Closed / Open Posion (B1 / A2) ...................................................................... 6
2.2.1.3 Open / Open Posion (A1 / A2) ........................................................................ 6
2.2.1.4 Closed / Closed Posion (B1 / B2) .................................................................... 6
Chapter 3 Solenoid Pilot Valves & Manifolds .................................................................... 7
3.1 Air Supply Requirements .......................................................................................................... 7
3.1.1 Air Input and Output ............................................................................................ 7
3.2 Electrical Power......................................................................................................................... 8
3.3.1 Power Failure Opons.......................................................................................... 8
3.3 High Temperature CV Valves .................................................................................................... 9
Chapter 4 CV-200 Series & CV-400 Series Valve Maintenance.................................... 11
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4.1 Tools You Will Need ................................................................................................................ 11
4.2 Disassembling the 2-Way Valve .............................................................................................. 11
4.3 Disassembling the Piston Assembly ........................................................................................ 12
4.4 Disassembling the Sleeve Assembly ....................................................................................... 12
4.5 Inspecng the Sleeve and Cone .............................................................................................. 13
4.6 Reassembling the Sleeve Assembly ........................................................................................ 13
4.7 Reassembling the Piston Assembly ......................................................................................... 14
4.8 Reassembling the 2-Way Valve ............................................................................................... 14
Chapter 5 CV-300 Series & CV-500 Series Valve Maintenance .................................. 17
5.1 Dierences Between the CV 2-Way and 3-Way Valves .......................................................... 17
5.2 Disassembling the 3-Way Valve .............................................................................................. 17
5.3 Disassembling the Piston Assembly ........................................................................................ 18
5.4 Disassembling the Sleeve Assembly ....................................................................................... 18
5.5 Reassembling the Sleeve Assembly ........................................................................................ 18
5.6 Reassembling the Piston Assembly ......................................................................................... 18
5.7 Reassembling the 3-Way Valve ............................................................................................... 18
Chapter 6 Maintenance & Troubleshoong .................................................................... 21
6.1 Air Supply Problems ................................................................................................................ 21
6.1.1 Solenoid Pilot Valve Visual Check ................................................................................ 21
6.1.1.1 If the Light Goes On and O for a Dierent Solenoid Pilot Valve................... 21
6.1.1.2 If No Light Goes On or O ............................................................................... 22
6.1.2 Solenoid Pilot Valve Audio Check ................................................................................ 22
6.1.2.1 No “Air Escaping” Sound When CV Valves Are Opened & Closed .................. 22
6.1.2.2 The Air Supply is Not Dry ................................................................................ 22
6.1.2.3 The Air Pressure is Too Low ............................................................................ 23
6.1.2.4 The Air Pressure is Too High ........................................................................... 23
6.1.2.5 Constant “Air Escaping” Sound ....................................................................... 23
6.1.2.6 Compressed Air Supply Runs Out Quickly ...................................................... 24
6.2 Fluid Supply Problems ............................................................................................................. 24
6.2.1 Fluid Leaks from the CV Valve Bleed Port .................................................................... 24
6.2.2 Fluid Leaks Across a “Closed” Valve ............................................................................. 25
6.2.3 Fluid Leaks Into Air Tubes ............................................................................................ 25
6.2.4 Fluid is Not Traveling Properly ..................................................................................... 25
Appendix 1: Removal & Replacement of the Cone ........................................................ 27
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Appendix 2: CV-210 & CV-310 Valve Components ......................................................... 30
Appendix 3: CV-405 & CV-505 Valve Components ......................................................... 31
Appendix 4: CV-410 & CV-510 Valve Components ......................................................... 32
Appendix 5: CV-420 & CV-520 Valve Components ......................................................... 33
Appendix 6: Commercially Available Parts ....................................................................... 34
A.6.1 Fluid Fings .......................................................................................................................... 34
A.6.2 Pilot Valves / Air Manifold ........................................................................................................ 35
A.6.3 Lubricants and Adhesives ......................................................................................................... 35
Appendix 7: O-Ring Compability Chart............................................................................ 36
Appendix 8: Quote Request / Order Form ........................................................................ 37
Index ............................................................................................................................................. 38
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Chapter 1
1. General Overview
The Vindum Engineering CV High Pressure Valves are available in two conguraons; either as a 2-posion, on/o valve, or a 3-way, 4-posion valve. The CV Valves are air-actuated, constant-volume valves with a switching me of less than .1 second. They are typically used as switching devices in high-pressure uid ow systems. The valves are designed so that no uid is displaced when they are opened or closed. This allows them to be useful in systems requiring constant volumes or constant pressures during the switching cycle.
All weed parts on CV Valves ulize either 316 stainless steel, which is corrosion resistant, or Hastelloy© C-
276, which is used for brine applicaons or highly corrosive uids. Our standard valves have a temperature
rang of 180°F (80°C). Valves with our high temperature opon have a temperature rang of 320°F (160°C).
1.1 Conguraon
Each CV Valve is customized to the needs of the user by ulizing the following opons: The CV Valve can be built as either:
• 2-Way, on/o valve, which uses a single solenoid pilot valve
• 3-Way, 4 posion valve which uses 2 solenoid pilot valves. The 3-way, 4-posion valve contains two inde-
pendently operated valves that are connected with a center ng (tee).
Solenoids to control the valve are sold separately. Solenoids can be ordered singly or in manifold with up to
twelve staons.
1.2 Main O-Ring Seal Material
The following materials are available for the weed O-ring. The weed O-ring material needs to agree with the uid used. See Appendix 7 or online sources (such as the Parker O-ring handbook) for chemical combabil­ity
• Aas
• Buna
• Teon™
• UHMW
• Viton
• Other materials on request
1.3 Pressure Rang
The CV-Valves can have a pressure rang of either 5,000; 10,000; or 20,000 psi.
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1.4 Solenoid Pilot Valve
The solenoid pilot valves for the 85 to 115 psi air supply can be operated by either:
• 12 Vdc
• 24 Vdc
Note: The standard voltage is 12 Vdc, 24 Vdc is available on request.
1.5 Valve Temperature Rang
• Standard ambient temperature CV-Valves operate up to 180°F (80°C), and have push-in type air line
ngs.
• Oponal high temperature CV-Valves operate up to 320°F (160°C), and have compression type air line
ngs
Note: air line ngs are the only dierence between ambient and high temperature valves.
1.6 Weed Parts
There are two opons of materials for the valve’s weed parts, or the parts of the valve that will come in con­tact with the uid:
• 316 Stainless Steel for inert materials, or
• Hastelloy C-276 for corrosive materials or brine
1.7 Everything you need to operate your CV Valve
• Valve
• High Pressure Fings
• Pneumac ngs
Sold Separately
• Solenoid Pilot Valves
• 1/8” air tubing
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1.8 Addional Informaon
1.8.1 CV Valve Models
Valve
Maximum
CV VALVE MODELS
Internal
Approximate
Model
Pressure
Rang [PSI (Bar)]
Volume (cc)
Flow
Coefficient (Cv)
2-Way On-O Valves
CV-210 10,000 (700) 0.11 .06
CV-405 5,000 (350) 0.44 .24 CV-410 10,000 (700) 0,44 .12 CV-420 20,000 (1400) 0.22 .03
3-Way 4 Posion Valves
CV-310 10,000 (700) 0.31 .06 CV-505 5,000 (350) 1.08 .24 CV-510 10,000 (700) 0.74 .12 CV-520 20,000 (1400) 0.62 .03
Table 1-1
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1.8.2 CV Valve Sizes
Valve Size
Valve
Model
(Autoclave Engineers)
Fings
2-Way On-O Valves
CV-210 W125 - 1/8” Speedbite
SW250 - 1/4” Speedbite
CV-405
CV-410 SW250 - 1/4” Speedbite
CV-420 F250C - 1/4” High Pressure
3-Way 4 Posion Valves
Valve
Dimensions
2” diameter x 1.695”
(5.0 cm x 4.3 cm)
2.25” diameter x 1.95” (5.7 cm x 4.9 cm)
2.25” diameter x 1.95” (5.7 cm x 4.9 cm)
2.25” diameter x 1.95” (5.7 cm x 4.9 cm)
CV-310 W125 - 1/8” Speedbite
CV-505 SW250 - 1/4” Speedbite
CV-510 SW250 - 1/4” Speedbite
CV-520 F250C - 1/4” High Pressure
2” diameter x 3.645”
(5.0 cm x 9.2 cm)
2.25” diameter x 4.435” (57 cm x 11.3 cm)
2.25” diameter x 4.435” (57 cm x 11.3 cm)
2.25” diameter x 4.435” (57 cm x 11.3 cm)
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Chapter 2
2. UNDERSTANDING YOUR VALVE
2.1 Principles of Operaon for the 2-Way Valve
Each CV 2-Way Valve contains two air supply tubes, A and B, which are connected to one solenoid-operated pilot valve. Pressurized air passes from the solenoid pilot valve through one of the air supply
tubes into the 2-Way valve’s piston assembly. Within the piston as-
sembly is a cone that serves as a “gate”, which either opens and al­lows uid to ow or closes and stops uid from owing.
• Pressurized air passing through air supply tube A moves an inter-
nal cone away from the A air supply port. Because the cone is pointed towards the A port, this causes the valve to open and u­id to ow. This is considered the “open” posion.
CV-210 Open Valve
• Pressurized air passing through air supply tube B moves an inter-
nal cone towards the A air supply port. This causes the valve to close and uid to stop. This is considered the “closed” posion.
• The C port is a pressure bleed port. It is designed to provide pres-
sure relief in case uid leaks out of the sleeve assembly. If uid is leaking from the C-Port, there is a problem with your valve. See secon 6.2.1.
CV-210 Closed Valve
High Pressure Air
Figure 2.1
Fluid Path
2.1.1 Possible Conguraons of the 2-Way Valve
The 2-Way CV Valve is an on/o valve. It can be congured in two ways, either normally open or normally closed. In case of a power failure, it can be set to open or to close. See secon 3.2.1: Power Failure Opons for informaon on valve conguraons.
2.1.2 Direcon of Flow
The uid can ow through the valve in either direcon. Figure 2.1 shows the uid coming in from the le side.
2.2 Principles of Operaon for the 3-Way Valve
The CV 3-Way Valve contains two piston assemblies, which are connected by a center ng (tee), and four air supply tubes. Two air supply tubes run between each piston assembly and solenoid pilot valve. Two sole­noid pilot valves are then aached to an air manifold.
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2.2.1 Possible Conguraons of the 3-Way Valve
Because the three-way CV Valve contains the equivalent of two 2-Way valves, it can be used as two independently operated on-o valves, or as a single 3-way, 4-posion switching valve. The 3-way valve can be operated in the following four posions.
2.2.1.1 Open/Closed Posion (A1 / B2) Fig. 2.2
• Air ows into air-inlet port A1, causing the cone inside
of valve 1’s piston assembly to open.
• Air ows into air-inlet port B2 causing the cone in-
side of valve 2’s piston assembly to close.
2.2.1.2 Closed/Open Posion (B1 / A2) Fig. 2.3
• Air ows into air-inlet port B1 causing the cone in-
side of valve 1’s piston assembly to close.
• Air ows into air-inlet port A2 causing the cone in-
side of valve 2’s piston assembly to open.
2.2.1.3 Open/Open Posion (A1 / A2) Fig. 2.4
A1 C1 B1 B2 C2 A2
Valve 1 Valve 2
High pressure air
Fluid Path
Figure 2.2 Open/Closed Valve
A1 C1 B1 B2 C2 A2
Valve 1 Valve 2
Fluid Path High pressure
air
Figure 2.3 Closed/Open Valve
A1 C1 B1 B2 C2 A2
• Air ows into air-inlet port A1 causing the cone inside
of valve 1’s piston assembly to open.
• Air ows into air-inlet port A2 causing the cone inside
of valve 2’s piston assembly to open.
2.2.1.4 Closed / Closed Posion (B1 / B2)
• Air ows into air inlet port B1 causing the cone inside
of valve 1’s piston assembly to close.
• Air ows into air inlet port B2 causing the cone inside
of valve 2’s piston assembly to close.
Valve 1 Valve 2
High pressure air
Fluid Path
Figure 2.4 Open/Open Valve
A1 C1 B1 B2 C2 A2
Valve 1 Valve 2
High pressure air
Fluid Path
Figure 2.5 Closed/Closed Valve
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Chapter 3
3. Solenoid Pilot Valves and Manifolds
The CV-Series Valves are completely air actuated. Air is taken into the air inlet and distributed to the solenoid pilot manifolds. The solenoid pilots then distribute and control the air ow to the valves.
3.1 Air Supply Requirements
Because the CV Valves are completely air-actuated, 85 to 115 PSI of ltered air must be connected to the so­lenoid pilot valves at all mes. Failure to maintain sucient air pressure at the appropriate port on the CV Valves can result in valve malfuncon, leakage and subsequent loss of control. Following are the air supply
requirements for all CV Valves.
• The air must be clean.
• The air must be dry because moisture in the air supply will cause the solenoid pilot valves to rust and mal-
funcon.
• The air must be oil-free.
• The air must be 85 - 115 PSI (5.95 to 8.05 bar). If the air pressure is outside this range, the solenoid pilot
valves may stop working.
A standard, ltered laboratory air supply from an air compressor is adequate if it meets the above criteria. The air compressor should be equipped with a dryer because water vapor in the air lines will cause the pilot valves to rust and malfuncon. Tanks of compressed air should not be used as a pressurized air source.
3.1.1Air Input and Output
CV Valves are air-actuated. Incoming air must be connected at the solenoid pilot valves’ air inlet port, as shown in Figure 3-1. The air inlet at the boom of a single solenoid (marked with a “P”) has a 1/8” quick­disconnect ng. This ng should be connected to a pressurized air source (regulated at 85 - 115 PSI) with a 1/8” air line. Solenoids are also available in groups connected to a manifold for a common air supply, as shown in Figure 3-2. The manifold air intake uses a 1/4” airline connected to a quick-disconnect ng.
A B
P (Air Inlet)
Figure 3-1: Solenoid Pilot Valve
Figure 3-2: Solenoids
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The air inlet ngs on the CV Valves are plasc “quick disconnects”, the same as the outlet ngs on the solenoid pilot valves. Connect the solenoid pilot valves to the CV Valve using 1/8” nylon or Teon™ tubing (Teon™ tubing is used for high temperature applicaons).
NOTE: Before any of the air lines connecng the solenoid pilot valves to the CV Valves are disconnected, for any reason, some type of numbered or color-coded tags should be placed on each air line, each solenoid pilot valve ng, and each CV Valve ng to ensure the correct connecons are made during reassembly.
3.2 Electrical Power
The solenoid pilot valves require electrical power to re-direct air pressure from one valve port to another. If electrical power is lost, the solenoid pilot valves posion themselves to their default; non-energized posion and valve control is lost. When the solenoid pilot valve loses power, the “B” port of the soliniod valve be­comes pressurized and the “A” port has no pressure in it. In gure 3-3 the “B” port of the solenoid pilot valve becomes pressured and causes the valve to close. For this reason, electrical failure should be taken into con­sideraon and the lines should be connected so that if a power failure does occur, a dangerous situaon is not created.
3.2.1 Power Failure Opons
In case of electrical failure, the valves can be congured to either default to a closed or an open posion. To set up a normally closed conguraon, the “B” ports of the solenoid valve and CV Valve should be connected together, and the “A” ports should be connected together, as shown in gure 3-3. For a normally open con­guraon, the “B” port of the solenoid valve should be plugged into the “A” port of the CV Valve and vice
versa, as shown in gure 3-4.
Figure 3-3 Normally Closed CV-210 Valve
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