CVS Controls DBAQ Series Instruction Manual Download Page 10

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Item

Description

Item

Description

Body, LCC, 900/1500#, RF

Packing Set, Upper Packing, PTFE

Bonnet, LCC, 3-9/16 Yoke Boss

Packing Set, Center Packing, PTFE

Bonnet Flange, LCC

Packing Set, Lower Packing, PTFE

Pin, Ø.187, 316 SST

Packing Flange, Steel

Bonnet Gasket

Packing Flange Stud, Steel

Seat Ring Gasket

Packing Flange Nut, Steel

3/4" Stem, 316 SST

Packing Box Ring, 316 SST

Hex Nut, 9/16”, ASME SA

-194-2H

Upper Wiper, Felt

Stud Bolt, 9/16”x3.78, ASME SA

-193-B7

Packing Follower, 316 SST

Cage

Packing Spring

Seat Ring

Special Washer

Plug

Lower Wiper, Felt

Figure 7:

2” CVS SERIES DBAQ

Summary of Contents for DBAQ Series

Page 1: ...perature control service CVS Series DBQ is a globe style valve while the CVS Series DBAQ is an angle style valve which may be used in angle piping or self draining applications Valve bodies are available in 1 or 2 inch sizes with casted flanged connections and ASME body ratings of Class 1500 or Class 2500 LCC WCB and CF8M are standard body materials Additional materials may be available upon reque...

Page 2: ...and M Form Trims Up through the seat ring and out through the cage Flow Characteristic Refer to Table 2 Pressure and temperature limits in this manual and any applicable standard should not be exceeded Table 2 Yoke Boss Stem Port and Travel Specifications in inches mm Body Size Yoke Boss Diameter Stem Diameter Standard Cage and Seat Ring Combinations M Form Plug Taper Plug Port Diameter Rated Trav...

Page 3: ...packing installed in the packing box it will be necessary to install the packing before putting the valve into service To complete these procedures follow the instructions under packing maintenance in this manual 8 Note It may be necessary to adjust the packing to prevent leakage Prior to shipping the packing was tightened and may require some adjustment for specific conditions MAINTENANCE Interna...

Page 4: ... manner the packing will need to be replaced Other Packing If packing other than Spring Loaded PTFE V Ring has been used attempt to eliminate the leaking and create a stem seal by tightening the packing flange nuts to the minimum recommended torque given in Table 5 If leakage continues the packing will need to be replaced Figure 2 Lubricator and Lubricator Isolating Valve New Packing If tightening...

Page 5: ...g packing is being added remove the stem connector and slip the rings over the end of the valve stem 5 Re assemble the packing follower upper wiper packing flange and packing flange nuts keys 21 20 16 and 18 6 Reconnect the body actuator stem connection according to the appropriate manual Torque accordingly reference Table 3 REPLACING PACKING Prior to beginning any maintenance it is important to i...

Page 6: ...d clear of debris Check that the M Flat valve plug and stem assembly are oriented as shown in Figure 5 when replacing the bonnet to the valve body Slide the bonnet over the stem onto the stud bolts 10 Replace the packing hex nuts key 18 10a For pre lubricated hex nuts identified by black film coating on the nut threads tighten the hex nuts finger tight 10b For all other nuts CVS Controls recommend...

Page 7: ...mum recommended torque is reached shown in Table 3 17 Mount the actuator on the valve body and reconnect the valve plug stems according to the appropriate actuator instruction manual Valve Size Inch Valve Rating ASME Class Lbf Ft N m 1 1500 130 176 2500 191 259 2 1500 104 141 2500 281 381 DOUBLE PACKING PTFE COMPOSITION Figure 3 Packing Arrangements GRAPHITE RIBBON AND FILAMENT PTFE V RING GRAPHIT...

Page 8: ...cted If the leakage becomes excessive it is possible to improve shutoff by seat lapping of the valve plug and seat ring Deep nicks may be machined rather than ground out Apply a good quality lapping compound mixture of 280 to 600 grit to the bottom of the valve plug Secure the seat ring using a vise and hold the cage against the seat ring to properly align the valve plug and seat ring while grindi...

Page 9: ...eplacing packing procedure NOTE Should minor adjustments be required re clamp the actuator and valve stems together Do not screw the valve stem in or out of the stem connector as this may change the orientation of the valve plug shown in Figure 5 7 Mount the actuator using correct procedures referenced in the appropriate actuator manual Check for packing leakage when putting the valve into service...

Page 10: ... 4 Pin Ø 187 316 SST 16 Packing Flange Steel 5 Bonnet Gasket 17 Packing Flange Stud Steel 6 Seat Ring Gasket 18 Packing Flange Nut Steel 7 3 4 Stem 316 SST 19 Packing Box Ring 316 SST 8 Hex Nut 9 16 ASME SA 194 2H 20 Upper Wiper Felt 9 Stud Bolt 9 16 x3 78 ASME SA 193 B7 21 Packing Follower 316 SST 10 Cage 22 Packing Spring 11 Seat Ring 23 Special Washer 12 Plug 24 Lower Wiper Felt Figure 7 2 CVS ...

Page 11: ...Stem Plug Assembly Alloy 6 See Table 6 1 13 Packing Set Upper Packing PTFE See Table 7 1 14 Packing Set Center Packing PTFE See Table 7 3 15 Packing Set Lower Packing PTFE See Table 7 1 16 Packing Flange 3 4 Steel CVS 1E9448 1 17 Packing Flange Stud Steel CVS 1E9449 2 18 Packing Flange Nut Steel CVS 1E9446 2 19 Packing Box Ring 316 SST CVS 1J8733 1 20 Upper Wiper Felt 3 4 CVS 1J8728 1 21 Packing F...

Page 12: ... Ends RTJ Flanged Ends 1 2 12 7mm Stem 3 4 19 1mm Stem 1 2 12 7mm Stem 3 4 19 1mm Stem Class 900 1500 Class 2500 Inches 1 10 00 10 12 13 12 13 8 31 9 38 15 38 16 00 1 81 2 12 2 12 13 12 25 15 38 15 50 9 75 10 50 16 81 17 44 2 75 3 25 mm 1 254 254 308 308 211 238 391 406 46 54 2 308 311 391 394 248 267 427 443 70 83 CVS Series DBQ Dimensions CVS Series DBQ Plain Bonnet CVS Series DBQ Extension Bonn...

Page 13: ... 19 1mm Stem Inches 1 5 56 5 56 6 06 6 06 8 31 9 38 15 38 16 00 2 7 00 7 06 7 69 7 75 9 75 10 50 16 81 17 44 mm 1 141 141 154 154 211 238 391 406 2 179 179 195 197 248 267 427 443 Nominal Body Size Inch D Class 2500 Standard Bonnet Extension Bonnet 1 2 12 7mm Stem 3 4 19 1mm Stem 1 2 12 7mm Stem 3 4 19 1mm Stem Inches 1 6 94 8 00 14 00 14 62 2 8 25 9 00 15 31 15 94 mm 1 176 203 356 371 2 210 229 3...

Page 14: ...596 560 566 594 601 625 659 686 608 2 1 4 3 8 1 2 3 4 1 6 4 9 5 12 7 19 1 25 4 3 4 3 4 3 4 3 4 3 4 19 19 19 19 19 482 434 792 774 647 417 306 754 647 645 420 425 687 645 659 479 537 665 649 644 522 522 635 658 623 563 519 618 651 612 548 535 600 623 614 565 569 600 624 621 591 611 663 664 721 643 720 748 731 784 1 1 4 31 8 3 4 1a 19 25a 671 629 624 598 544 343 684 711 774 774 698 Flow Down Equal P...

Page 15: ...fy or change and improve design process and specifications without written notice Under no circumstance is the information contained to be interpreted to be a guarantee warranty with regard to our products or services applicability or use Selection use and maintenance are the sole responsibility of the end user and purchaser CVS Controls assumes no liability for the selection use and maintenance o...

Page 16: ...on Alberta T6E 0A5 Canada Office 780 437 3055 Fax 780 436 5461 Calgary Sales Office 3516 114 Avenue SE Calgary Alberta T2Z 3V6 Canada Office 403 250 1416 Fax 403 291 9487 Website www cvs controls com Email info cvs controls com May 2019 ...

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