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Vindum CV Series Manual

High-pressure valves
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CV Series
High-Pressure Valves
Copyright 2005-2006 Vindum Engineering, Inc. All rights reserved. Reproduction or use of contents in any manner is prohibited without
express permission from Vindum Engineering. While every precaution has been taken in the preparation of this manual, the publisher assumes
no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from use of the information contained herein.

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  • Page 1 Copyright 2005-2006 Vindum Engineering, Inc. All rights reserved. Reproduction or use of contents in any manner is prohibited without express permission from Vindum Engineering. While every precaution has been taken in the preparation of this manual, the publisher assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from use of the information contained herein.
  • Page 2 This page is intentionally blank.

  • Page 3: Table Of Contents

    ________________________________________________________________________ Table of Contents Chapter 1 General Overview .......................1 1.1 Configuration ..........................1 1.2 Main O-Ring Seal Material......................1 1.3 Pressure Rating ..........................1 1.4 Solenoid Pilot Valve ........................1 1.5 Valve Temperature Rating......................2 1.6 Wetted Parts ..........................2 1.7 Everything is included with your CV Valve................2 2.1 Principles of Operation for the 2-Way Valve ................5 Chapter 2 Understanding Your Valve ..................5...
  • Page 4 ________________________________________________________________________ 4.7 Reassembling the Piston Assembly ..................17 4.8 Reassembling the 2-Way Valve....................18 Chapter 5 CV-300 Series & CV-500 Series Valve Maintenance ......19 5.1 Differences Between the CV 2-Way and 3-Way Valves............19 5.2 Disassembling the 3-Way Valve....................19 5.3 Disassembling the Piston Assembly ..................20 5.4 Disassembling the Sleeve Assembly ..................20 5.5 Reassembling the Sleeve Assembly..................20 5.6 Reassembling the Piston Assembly ..................20...
  • Page 5 ________________________________________________________________________ Appendix 5: CV-420 & CV-520 Valve Components ............37 Appendix 6: Commercially Available Parts ................39 Appendix 7: O-Ring Compatibility Chart ................41 Appendix 8: Quote Request / Order Form ................43...
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  • Page 7: Chapter 1 General Overview

    Chapter 1 1. General Overview The Vindum Engineering CV High Pressure Valves are available in two configurations; either as a 2-position, on/off valve, or a 3-way, 4-position valve. The CV Valves are air- actuated, constant-volume valves with a switching time of less than .1 second. They are typically used as switching devices in high-pressure fluid flow systems.

  • Page 8: Valve Temperature Rating

    ________________________________________________________________________ 1.5 Valve Temperature Rating • Standard Ambient Temperature: 180°F (80°C) with push-in type air line fittings. • Optional High Temperature: 320°F (160°C) with compression type air line fittings 1.6 Wetted Parts There are two options of materials for the valves wetted parts. (The parts of the valve that will come in contact with the fluid: •...
  • Page 9 ________________________________________________________________________ Valve Size Valve Fittings Valve Model (Autoclave Engineers) Dimensions 2-Way On-Off Valves 2” diameter x 1.695” CV-210 W125 - 1/8” Speedbite (5.0 cm diameter x 4.3 cm 2.25” diameter x 1.95” SW250 - 1/4” Speedbite CV-405 (5.7 cm x 4.9 cm) 2.25”...
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  • Page 11: Principles Of Operation For The 2-Way Valve

    ________________________________________________________________________ Chapter 2 2. UNDERSTANDING YOUR VALVE 2.1 Principles of Operation for the 2-Way Valve Each CV 2-Way Valve contains two air supply tubes, 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.

  • Page 12: Possible Configurations Of The 3-Way Valve

    ________________________________________________________________________ 2.2.1 Possible Configurations 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-off valves, or as a single 3-way, 4-position switching valve. The 3-way valve can be operated in the following four positions. 2.2.1.1 Open / Closed Position (A1 / B2) •...

  • Page 13: Closed / Closed Position (B1 / B2)

    ________________________________________________________________________ 2.2.1.4 Closed / Closed Position (B1 / B2) • Air flows into air inlet port B1 causing the cone inside of valve 1’s piston assembly to close. • Air flows into air inlet port B2 causing the cone inside of valve 2’s piston assembly to close.
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  • Page 15: Chapter 3 Solenoid Pilot Valves & Manifolds

    ________________________________________________________________________ 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 flow to the valves. 3.1 Air Supply Requirements Because the CV Valves are completely air-actuated, 85 to 115 PSIG of filtered air must be connected to the solenoid pilot valves at all times.

  • Page 16: Air Input And Output

    ________________________________________________________________________ Figure 3-1 • Figure 3-2, below, shows the correct connections for “normally closed” operation for the CV-310 Valve with two solenoid pilot valves. For both valves, fluid can flow in either direction. Figure 3-2 3.3 Air Input and Output As previously mentioned, the CV Valves are air-actuated.

  • Page 17: High Temperature Cv Valves

    ________________________________________________________________________ NOTE: The air compressor should be equipped with a dryer because water vapor in the air lines will cause the solenoid pilot valves to rust and malfunction. The air inlet fittings on the CV Valves are plastic “quick disconnects”, the same as the outlet fittings on the solenoid pilot valves.
  • Page 18 ________________________________________________________________________ • The 1/8” tubing used for the air connection between the solenoid pilot valve and the CV Valve must be made of Teflon instead of nylon. • The inlet air line fittings on the CV Valve will be swage-type fittings with metal ferrules.

  • Page 19: Chapter 4 Cv-200 Series & Cv-400 Series Valve Maintentance

    ________________________________________________________________________ Chapter 4 4. CV-200 Series and CV-400 Series Valve Maintenance The information contained in Chapter 4 explains how to disassemble, reassemble and service all of the CV-series on-off valves. Chapter 5 will explain how to service the 3- way valves. The piston assemblies and sleeve assemblies in the 3-way valves are relative to those used in the on-off valves, so most of the information in his chapter also pertains to 3-way valves.

  • Page 20: Disassembling The Piston Assembly

    ________________________________________________________________________ 1. Use a 9/64” Allen wrench to remove the two 8-32 x 5/8” socket head cap screws [1] securing the valve to the Support Bracket [3]. 2. Remove the remaining six 8-32 x 1/2" socket-head cap screws [2] securing both End Caps [4] in place.

  • Page 21: Disassembling The Sleeve Assembly

    ________________________________________________________________________ 2. Turn the either one of the Piston halves counter-clockwise, while holding the other Piston stationary with the wrench. After the two halves “break free”, continue to gently unscrew them by hand and set both pieces aside on a clean surface with their threaded sides “up”.

  • Page 22: Inspecting The Sleeve And Cone

    ________________________________________________________________________ Figure 4-4 Figure 4-5 4.5 Inspecting the Sleeve and Cone Now that the outside ring, o-ring and the back-up ring are removed, wipe everything dry with a clean paper towel or a clean cloth. Look inside of the sleeve. Check to make sure the area inside of the sleeve where the o- ring sits is clean and scratch-free.

  • Page 23: Reassembling The Sleeve Assembly

    ________________________________________________________________________ center or have an asymmetrical wear pattern. Proceed only if the cone appears in good condition. If the cone displays any of the above problems, refer to Appendix 1 for information on replacing it. 4.6 Reassembling the Sleeve Assembly To reassemble the Sleeve Assembly, follow the instructions below.

  • Page 24: Reassembling The 2-Way Valve

    2. Apply a small amount of high quality grease (not oil) to the external o-rings [10] and the smaller internal O-rings [9]. Vindum Engineering uses Parker O-Lube® for ambient temperature valves and Dow Corning 55 (M)® for high temperature valves.

  • Page 25: Chapter 5 Cv-300 Series & Cv-500 Series Valve Maintenance

    Chapter 5 5. CV-300 Series and CV-500 Series Valve Maintenance The information contained in Chapter 5 explains how to disassemble, reassemble and service all of the CV Series 3-way valves. 5.1 Differences Between the CV 2-Way and 3-Way Valves Figure 5-1 The 3-way CV Valve contains all of the same sub-assemblies as the 2-way CV Valve.

  • Page 26: Disassembling The Piston Assembly

    ________________________________________________________________________ from the body of the valve. When there is sufficient space between the End Cap and the Cylinder shell [37] [38], grasp the End Cap by hand and gently separate the two parts. As the End Cap begins to separate from the Cylinder Shell, continue to pull “straight back”, with a minimum amount of “rocking back-and-forth”.
  • Page 27 ________________________________________________________________________ 5. Lubricate the narrow stems of each End Fitting [35]. 6. Lubricate the O-rings [39] on both sides of the Center Fitting. Only lubricate the part that will slide into the Cylinder Shells. 7. Lubricate the other two O-rings [39]. 8.
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  • Page 29: Chapter 6 Maintenance & Troubleshooting

    ________________________________________________________________________ Chapter 6 6. Maintenance & Troubleshooting This chapter will help the user solve problems that might be encountered when operating the CV Valve. The following sections are included: • Air Supply Problems, Section 6.1 • Fluid Supply Problems, Section 6.2 •...

  • Page 30: If The Light Goes On And Off For A Different Solenoid Pilot Valve

    ________________________________________________________________________ 2. As each CV Valve is opened, confirm the corresponding solenoid pilot light comes 3. As each CV Valve is closed, confirm the corresponding solenoid pilot light turns off. 6.1.1.1 If the Light Goes On and Off for a Different Solenoid Pilot Valve If the light goes on and off for a different solenoid pilot valve than the one you are controlling on the computer, the solenoid pilot cables are switched and must be re- connected properly.

  • Page 31: The Air Supply Is Not Dry

    ________________________________________________________________________ • Check if there are any kinks in the air tubing which runs between the solenoid pilot valves and the CV Valves. • Check your air tubing has been connected properly and is securely attached. • If your air supply has a switch to turn it on, make sure the switch is turned on. •...
  • Page 32 • Verify that the gasket between the solenoid pilot valve and the air manifold is not damaged or cracked. If the gasket is cracked, contact Vindum Engineering for a replacement. • If air continues to escape from the area between the solenoid pilot valve and the manifold, apply a light coat of silicone based compound (Dow –Corning...

  • Page 33: Compressed Air Supply Runs Out Quickly

    ________________________________________________________________________ 6.1.2.6 Compressed Air Supply Runs Out Quickly Tanks of compressed air are not recommended as a pressurized air source. Only a continuous air supply should be used as the air source and air compressors need to be equipped with a dryer. 6.2 Fluid Supply Problems If the valve leaks, either of the following can occur: •...

  • Page 34: Fluid Leaks Into Air Tubes

    ________________________________________________________________________ • Inspect the Sleeve Assembly for contaminants blocking the cone. If contaminants are present remove the contaminants making sure that they have not left an indent in the cone, End Fitting or the conical seat in the End Fitting. 6.2.3 Fluid Leaks Into Air Tubes The most likely cause of fluid leaking from the air tubes is water vapor is present in the pressurized air source.

  • Page 35: Appendix 1: Removal & Replacement Of The Cone

    ________________________________________________________________________ APPENDIX 1 Removal and Replacement of the Cone in the Sleeve Assembly In the CV-200 and CV-300 Series of valves, the Cone [18] and Spacer [19] are “press-fit” into the Sleeve Assembly. In the CV-400 and CV-500 Series of valves, however, the Cone cannot be pressed out, and it is recommended that the sleeve assembly be replaced with a new cone.
  • Page 36 ________________________________________________________________________ Figure A-2 Reinstalling the Cone and Spacer in the Sleeve Assembly Reinstalling the Cone and Spacer in the CV-200 and CV-300 Series of Valves Looking at the inside diameter of the Sleeve [20] from both sides, notice that on one side the inside shoulder is “farther down”...

  • Page 37: Appendix 2: Cv-210 & Cv-310 Valve Components

    ________________________________________________________________________ APPENDIX 2 CV-210 and CV-310 Valve Components Valve Assy - Refer to Figure 4-1 on page 13 or ( Figure 5-1) on page 19. Figure CV-210 VALVE CV-310 VALVE Description Number Quantity / Part Number Quantity / Part Number 1 &...
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  • Page 39: Appendix 3: Cv-405 & Cv-505 Valve Components

    ________________________________________________________________________ APPENDIX 3 CV-405 and CV-505 Valve Components Valve Assy - Refer to Figure 4-1 on page 13 or (Figure 5-1) on page 19. Figure CV-405 VALVE CV-505 VALVE Description Number Quantity / Part Number Quantity / Part Number 1 & (31) Socket Head Cap Screw 2 8-32 x 5/8-SHSS 8-32 x 5/8-SHSS...
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  • Page 41: Appendix 4: Cv-410 & Cv-510 Valve Components

    ________________________________________________________________________ APPENDIX 4 CV-410 and CV-510 Valve Components Valve Assy - Refer to Figure 4-1 on page 13 or (Figure 5-1) on page 19. Figure CV-410 VALVE CV-510 VALVE Description Number Quantity / Part Number Quantity / Part Number 1 & (31) Socket Head Cap Screw 8-32 x 5/8-SHSS / 8-32 x 5/8-SHSS...
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  • Page 43: Appendix 5: Cv-420 & Cv-520 Valve Components

    ________________________________________________________________________ APPENDIX 5 CV-420 and CV-520 Valve Components Refer to Figure 4-1 on page 13 or (Figure 5-1) on page 19. Valve Assy - Figure CV-420 VALVE CV-520 VALVE Description Number Quantity / Part Number Quantity / Part Number 1 & (31) Socket Head Cap Screw 2 8-32 x 5/8-SHSS 8-32 x 5/8-SHSS...
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  • Page 45: Appendix 6: Commercially Available Parts

    ________________________________________________________________________ APPENDIX 6 Commercially Available Parts FLUID FITTINGS Description Manufacturer Part Number Notes Fitting Sleeve* XX is material type: CV210 / CV-310 Autoclave SSL20 XX SS for Stainless 316 HC for Hastelloy C-276 Fitting Sleeve* XX is material type: CV-405, CV-410 Autoclave SSL40 XX SS for Stainless 316...
  • Page 46 ________________________________________________________________________ 1/8” Quick- Disconnect Air Fitting KQH 01-32 or similar for CV Valve and Pilot Valve 1/8” Swage-type Air Fitting for High Beswick MCB-1018-1 Viton or Temperature CV similar Valve ¼” Quick Disconnect Air Fitting For Air KQH 07-34S or similar The manifold port accepts 1/8”...

  • Page 47: Appendix 7: O-Ring Compatibility Chart

    ________________________________________________________________________ APPENDIX 7 O-Ring Compatibility Chart (taken from “Parker O-Ring® Handbook”) P = Poor F = Fair G = Good E = Excellent Butyl GE FG (-75 - 250F) Chlorinated Polyethylene Chloro- sulfonated Polyethylene Ethylene GE GE GE GE GE Propylene Flourocarbon GE FG...
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  • Page 49: Appendix 8: Quote Request / Order Form

    ________________________________________________________________________ APPENDIX 8 Quote Request / Order Form For CV Series High Pressure Valves Required Valve Type and Configuration Information. 2-Way Valve 3-Way Valve Select Wetted Material 316 Stainless Steel ________ ________ Hastelloy C-276 ________ ________ Expected Fluid Types Water (distilled)
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  • Page 51 INDEX ________________________________________________________________________ 3-Way Valve ........5 O-Ring Compatibility Chart ......39 Air Compressor........11 Greasing .......... 18 Air Inlet Fittings........11 Seal Material ........1 Air Lines Numbered or Color Coded Tags ..11 Air Supply Input and Output ......10 Piston Assembly Requirements ........
  • Page 52 INDEX ________________________________________________________________________ CV-310 Connection Diagram ..10 Size ..........3 CV-310 Diagram......21 Valve-Solenoid Pilot Disassemble 2-Way ......14 See Solenoid Pilot Valve ....9 Disassemble 3-Way ......21 Volume High Temperature ......11 Internal ..........2 Connecting Air Lines....11 Maintenance........

This manual is also suitable for:

Cv-200 seriesCv-400 seriesCv-300 seriesCv-500 seriesCv-410Cv-510 ... Show all

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