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Y690VB Series

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property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express
or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

Fisher does not assume responsibility for the selection, use or maintenance of any product.  Responsibility for proper selection, use and maintenance of any Fisher product remains solely with the purchaser.

For information, contact Fisher:

Marshalltown, Iowa 50158 USA
McKinney, Texas 75070 USA
28320 Gallardon, France
40013 Castel Maggiore (BO), Italy
Sao Paulo 05424 Brazil
Singapore 128461

www.FISHERregulators.com

 ©Fisher Controls International, Inc.,  1999;  All Rights Reserved

Summary of Contents for Y690VB Series

Page 1: ...this equipment is over pressured or is installed where service conditions could exceed the limits given in table 1 or where conditions exceed any ratings of the adjacent piping or piping connections To avoid such injury or damage provide pressure relieving or pressure limiting devices as required by the appropriate code regulation or stan dard to prevent service conditions from exceeding those lim...

Page 2: ... instruction manual and any applicable standard or code limitation should not be exceeded Table 1 Specifications Orifice Size 1 4 inch 6 4 mm or 1 2 inch 12 7 mm Change in Vacuum Control Pressure to Wide Open 2 See table 2 Pressure Registration Type Y690VB Internal Type Y690VBM External Material Temperature Capabilities 2 Nitrile NBR 20 to 180 F 29 to 82 C Fluoroelastomer FKM 40 to 300 F 4 to 149 ...

Page 3: ... inlet vacuum or pressure This equipment takes control when vacuum is established This equipment is suitable for the pressure range stamped on the nameplate key 46 and listed in table 2 To adjust the pressure setting remove the closing cap key 22 and turn the adjusting nut key 20 clockwise to in crease the pressure setting or counterclockwise to decrease the setting Replace the cap after making th...

Page 4: ... and secure them with the spring case cap screws key 24 and hex nuts key 23 not shown to fingertightness only 11 Install the upper spring seat key 19 and the adjusting nut key 20 turning clockwise until there is To avoid personal injury property damage or equipment damage caused by sudden release of pressure or explosion of accu mulated gas do not attempt any mainte nance or disassembly without fi...

Page 5: ...gm head key 7 Washer key 36 Diaphragm nut key 38 Secure with 5 to 6 foot pounds 7 to 8 N m of torque 9 Install the pusher post key 8 plus attached dia phragm parts onto the lever assembly key 16 10 Install the spring case assembly key 3 and control spring key 6 on the diaphragm casing key 4 so that the vent assembly key 26 is correctly oriented and secure them with the spring case cap screws key 2...

Page 6: ...X022 19 Upper Spring Seat 1A201824092 20 Adjusting Nut 17B9740X012 21 Hex Nut 1A345724122 22 Closing Cap Standard 1B541644012 Steel 1E422724092 23 Hex Nut not shown 8 required Ductile iron 1A352724122 Stainless steel 1E9440X0302 24 Diaphragm Case Cap Screw 8 required Ductile iron 1A352524052 Stainless steel 18B3455X012 25 Closing Cap Gasket 1P753306992 26 Vent Assembly Spring Case Up standard 17A6...

Page 7: ...Y690VB Series 7 Figure 3 Type Y690VBAssembly B2674_2 B2674_1 ...

Page 8: ...Y690VB Series Figure 4 Type Y690VBMAssembly B2675 ...

Page 9: ...g Body Area This procedure is for gaining access to the disk assembly orifice and body seal O ring All pressure must be released from the regulator before the following steps can be performed Key numbers are referenced in figures 3 and 4 1 To inspect and replace the orifice key 5 or disk assembly key 13 remove the cap screws key 2 and separate the diaphragm case assembly key 4 from the body key 1 ...

Page 10: ...he Diaphragm and Spring Case Area Maintenance section beginning on page 4 with the following slips off the lever assembly key 16 To separate the diaphragm assembly key 10 from the attached parts unscrew the diaphragm hex nut key 21 from the pusher post key 8 If the only further maintenance is to replace the diaphragm parts skip to step 7 4 To replace the lever assembly key 16 remove the machine sc...

Page 11: ...enance section Replace theTo Convert Constructions section on page 5 with the following TheTypeY690VBM to theTypeY690VB New parts required key 27 1 Insert pipe plug key 27 in the diaphragm casing key 4 2 Follow steps 1 through 6 and 8 through 11 in the Diaphragm and Spring Case Area Maintenance section to remove the stem seal key 30 figure 3 3 Follow steps 1 and 4 of Body Area Maintenance to remov...

Page 12: ...xpress orimplied regardingtheproductsorservicesdescribedhereinortheiruseorapplicability Wereservetherighttomodifyorimprovethedesignsorspecificationsofsuchproductsatanytimewithoutnotice Fisher does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any Fisher product remains solely with the purchaser For informati...

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