I & M Mark DBAQ Series
3170 Wasson Road • Cincinnati, OH 45209
Phone 513.533.5600 • Fax 513.871.0105 (f)
info@richardsind.com • www.jordanvalve.com
Warning: Jordan Valve Control Valves must only be used, installed and repaired in accordance with these Installation & Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event
of leakage or other malfunction, call a qualified service person; continued operation may cause system failure or
a general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized fluid. Before disassembling a valve, be sure to release all spring tension.
IntroductIon
Contained in this manual are installation instructions,
maintenance and parts information for the Mark DBAQ
Series Control Valves. Refer to the appropriate manuals for instructions for the accompanying actuator,
positioner and additional accessories.
Only trained or experienced personnel should carry
out the operation and installation of all pressure equipment. If you have any questions regarding the equipment, contact your Jordan Valve Controls representative.
InstallatIon
Exceeding the recommended pressure and temperature limits from Table 1, or those indicated on
the nameplates of your Control Valve, can result in
personal injury and property damage. Jordan Valve
recommends the installation of a relief valve to protect
against overpressure situations.
Mark DBAQ Series are designed to meet specific
conditions for fluid control, temperature, pressure and
pressure drop. The limiting factor on these valves can
be the body/trim material combinations. Do not install
these valves in any other applications without first consulting with your Jordan Valve representative.
1. Inspect the valves for shipping damage and
foreign debris while uncrating.
2. Ensure the pipeline is free from welding slag,
chips and other debris by blowing out the line
before installation.
3. Position the valve on the line so the flow direc tion indicator corresponds to the direction of
the flow of the pipeline.
4. Jordan Valve recommends the installation of
a standard three-valve maintenance bypass.
This will allow the isolation of the control valve
without shutting down the pipeline system.
Installation & Maintenance Instructions for the
Mark DBAQ Angle Style Control Valves
5. Install approved gaskets between the valve
body and the pipeline flanges.
6. If the actuator has been shipped separately,
refer to the mounting procedure in the appli cable instruction manual.
7. If the valve body arrives without packing
installed in the packing box, it will be neces sary to install the packing before putting the
valve into service. To complete these proce dures, follow the instructions under packing
maintenance in this manual.
8. *Note: It may be necessary to adjust the pack ing to prevent leakage. Prior to shipping the
packing was tightened, and may require some
adjustment for specific conditions.
MaIntenance
Internal valve components are subject to normal
deterioration and must be inspected and replaced
as required. The necessity of inspections and
replacement of parts will depend on the severity of
service conditions. Inspections and maintenance must
be carried out on a regularly scheduled basis.
To ensure the safety of personnel and to protect
against property damage, the following steps should
be carried out before beginning disassembly.
1. To prevent the valve from opening suddenly,
disconnect any operating lines to the actuator.
This would include air pressure, electrical
power or control signal lines.
2. Isolate the valve by using the bypass valve, or
by shutting down the process completely.
Relieve the pressure and drain the process
fluid from both sides of the valve.
3. Relieve the pressure contained in the actuator
by venting the actuator loading pressure
and relieving any power actuator
spring compression.
Mark DBaQ SerieS angle Style Control ValVeS
4. Lock-out procedures should be strictly
adhered to while the equipment is being
serviced.
5. To ensure a good gasket seal, the gasket
should be replaced upon re-assembly
whenever it becomes disturbed by removing
or shifting gasketed parts.
Packing Lubrication
These instructions are for the lubricator or lubricator
isolation valve (Figure 1). If the lubricator or lubricator
isolation valve have been installed, they will be in
place of the pipe plug and are designed for packing
that requires lubrication, including PTFE composition.
Jordan Valve recommends a silicone based lubricant.
Lubricant is not recommended for oxygen services or for
processes that operate in excess of 500oF (260oC). To
add lubricant to the packing box, turn the capscrew in a
clockwise direction.
Lubricator
Lubricator/ Isolating Valve
Figure 1: Lubricator and Lubricator Isolating Valve
For Lubricator/Isolating Valve
1. Open the isolating valve.
2. Turn the capscrew in a clockwise direction.
3. Close the isolating valve.
Packing Leakage
Spring-Loaded PTFE V-Ring Packing
To eliminate leakage, tighten the packing flange nuts
(key 18, figure 7). If leakage cannot be controlled in this
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.
New Packing
If tightening the appropriate flange nuts does not solve
the leakage problem and the packing is relatively new,
leakage could indicate damage to the packing box wall
or to the stem. Inspect the valve stem plug for a good
surface finish as well as the packing box wall for nicks
and scratches that could compromise the seal.
Hint:
If leakage originates from the outside diameter of
the packing, check the packing box wall for nicks or
scratches. If leakage originates from the inside diameter
of the packing, check the stem for nicks or scratches.
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Mark DBaQ SerieS angle Style Control ValVeS
Table 1: Recommended Torque for Packing Flange Nuts
Stem Diameter Valve Class
Inch mm Min Max Min Max
1/2 12.7 1500 11 16 15 22
3/4 19.1 1500 25 37 34 50
1 25.4 1500 38 57 52 77
1-1/4 31.8 1500 50 75 68 102
Rating
2500 13 18 18 24
2500 30 45 41 61
2500 45 67 61 91
2500 60 90 81 122
Adding Packing Rings
When using packing with lantern ring it may be possible
to add packing rings above the lantern ring as a
temporary measure without removing the actuator from
the valve body.
1. Isolate the control valve from the line pressure
and release the pressure from the valve body.
2. Remove the packing flange nuts (key 18, Figure
7) and lift the packing flange (key 16), upper
wiper (key 20) and packing follower (key
21, Figure 7) away from the valve body.
3. Take care when removing out the old packing
rings to avoid scratching the valve plug
stem or packing wall. Clean all
metal parts to remove debris that
would prevent the packing from sealing properly.
4. Should split ring packing be added, spread the
rings over the stem and slide the rings into
the packing box. Alternate the position
of the splits to avoid creating a leak
path. If solid ring 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).
Lbf•Ft N•M
Replacing Packing
Prior to beginning any maintenance, it is important to
isolate the valve from the line pressure, and to release
all pressure from the valve body. Disconnect all operating lines to the actuator, including air pressure, electrical power or control signal lines. The process pressure
should be released both upstream and downstream of
the valve. Drain the process fluid from both sides of the
valve.
Employ lockout procedures to ensure the safety of personnel and equipment during the valve service.
NOTE: Extreme caution must be used during the disassembly. Nicks and scratches will affect the ability
to seal the valve in the future.
1. Remove the capscrews in the stem connector
and separate the two halves. Exhaust all actua-
tor pressure if any was applied, and discon-
nect the actuator supply and leak off piping.
2. Remove the yoke locknut, and remove the
actuator from the bonnet (key 2).
3. Loosen the packing flange nuts (key 18), and
remove any travel indicator parts and stem
locknuts from the valve stem threads
6. Reconnect the body actuator stem connection
according to the appropriate manual. Torque
accordingly, reference Table 3.
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Mark DBaQ SerieS angle Style Control ValVeS
Replacing Packing Continued,
4. Unscrew hex nuts (key 8) and remove the bon-
net off the valve stem. Ensure the valve plug
and stem remain in the body and on the
seat. This will prevent damage to the
seating surfaces as a result of the assembly
dropping from the bonnet after being lifted out.
5. Should the valve plug and stem assembly start
to lift out, use a brass hammer on the
end of the stem and tap it back down. Set the
bonnet on a cardboard or wooden surface
to prevent damage to the bonnet gasket
surface.
6. Upon removing the bonnet gasket (key 5), cover
the opening in the valve body to protect the sur-
face and prevent any debris from getting into
the valve body.
7. Remove the packing flange nuts, packing
flange, upper wiper and packing follower (keys
18, 16, 20 and 21). Carefully push the remaining
parts out from the body side of the bonnet. Take
care not to scratch the packing box wall.
Clean the box and metal parts.
8. Inspect components such as valve stem threads
and packing box for any sharp edges that may
damage the packing. If the surfaces cannot be
improved by light sanding, replace the
damaged parts. Scratches or burrs may
cause packing leakage.
9. Remove the protective covering from the valve
body. Install a new bonnet gasket (key 5).
Ensure the gasket seating surfaces are
clean and clear of debris. Check that the
M-Flat valve plug, and stem assembly
are oriented as shown in Figure 2 when
replacing the bonnet to the valve body. Slide
the bonnet over the stem onto the stud bolts.
Figure 2: M-Flat Valve Plug Orientation
10. Replace the packing hex nuts (key 18)
10a. For pre lubricated hex nuts (identi fied by black film coating on the
nut threads) tighten the hex nuts
finger tight.
10b. For all other nuts, Jordan Valve rec ommends that you lubricate the
stud threads with Never Seez pure
Nickel special lubricant or equiva lent.
11. To center trim, the valve will need to be
stroked several times. Using proper
bolting procedures tighten the
nuts to no more than 1/4 of the torque
values specified in Table 2.
12. Increase the torque on each nut by an ad ditional 1/4 of the torque value using the
standard crisscross pattern. Repeat this
pattern until the torque values in Table 2
have been reached. Apply the final torque
value again and if any bolts turn, all of the
bolts will require re-tightening.
13. Using the appropriate packing arrange
ment, install new packing and metal pack
ing box parts. It may be necessary to
pre-lubricate packing parts with a silicone
based grease.
14. Using a smooth edged pipe, cautiously
tap each soft packing part into the pack
ing box. To prevent trapping air between
the rings, add one ring at a time, without
forcing them below entrance chamber
of the packing box. With each additional
ring the stack should only be pushed down
the thickness of one ring.
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Mark DBaQ SerieS angle Style Control ValVeS
Replacing Packing Continued,
15. Install the packing follower, wiper and packing
flange. Lubricate the packing flange
studs (key 17) and faces of the packing
flange nuts (key 18). Replace packing
flange nuts.
16. For spring loaded PTFE V-Ring packing, tighten
the packing flange nuts until the shoulder on the
packing follower (Key 21) contacts the bonnet.
For other packing types, tighten the packing
flange nuts in small increments alternately.
Repeat until the maximum recommended
torque is reached, shown in Table 2.
17. Mount the actuator on the valve body and
reconnect the valve plug stems according
to the appropriate actuator instruction
manual.
Valve
Valve Size
1 1500 130 176
2 1500 104 141
Table 2: Recommended Torque for Body to Bonnet Bolting
Rating
ASME
Class
2500 191 259
2500 281 381
Lbf•Ft N•m
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Mark DBaQ angle Style Control ValVeS
trIM MaIntenance
Disassembly
1. Remove the actuator from the bonnet. Refer to
steps 1 thru 5 of Replacing Packing procedure.
Observe all warnings and cautions.
NOTE: Avoid damaging gasket sealing surfaces. The
surface nish of the valve stem is critical for ensuring a tight seal. The seating of the seat ring and valve
plug are critical for tight shutoff. Replace accordingly
should an inspection show damage.
2. Carefully lift the valve plug and stem assembly,
cage, seat ring and seat ring gasket out of the
valve body. If the valve plug is being re used,
take care to protect the valve plug stem
and valve plug seating surface from scratches
or damage.
3. Inspect all components for wear or damage that
would prevent proper operation of the valve. Re-
place or repair trim parts accordingly. Refer to
Lapping Metal Seats or Trim Replacement as
required.
Lapping Metal Seats
With metal to metal seating in any valve, a small amount
of leakage can be expected. 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.
Assembly
Upon completion of trim maintenance or replacement,
reassemble the valve body using the following procedure. Ensure all gasketed surfaces have been thoroughly cleaned.
1. Install the seat ring gasket (key 6) and the seat
ring (key 11) into the valve body.
2. For standard cage installation, align two of the
holes in the cage with the centerline of the valve
body.
3. Install the valve plug and stem assembly (key
4) into the cage. Ensure the m-flat valve
plug orientation is as shown in Figure 2
when replacing the bonnet.
4. Install the bonnet gasket (key 5) and bonnet
(key 2) over the valve stem and onto the body.
5. Lubricate the bolting, unless pre lubricated bolt
nuts are being used. Replace the hex nuts
finger tight. Torque the nuts using proper bolting
procedures in a crisscross pattern to no
more than 1/4 of the nominal torque
value specified in Table 4. After all nuts
have been initially torque, increase the torque by
1/4 of the specified nominal torque using
proper bolting procedures again. Repeat the
process until all nuts are tightened to the
specified nominal value. Apply final torque once
again, should any nut still turn, repeat the torque
process on all nuts.
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 grinding.
Once completed, clean the seating surfaces thoroughly
and test for shutoff. Repeat the lapping process if leakage is still excessive.
6. Install new packing box parts using steps 11
thru 13 of the replacing 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 2.
7. Mount the actuator using correct procedures
referenced in the appropriate actuator manual.
Check for packing leakage when putting
the valve into service. Re-torque packing flange
nuts as required.
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Mark DBaQ SerieS angle Style Control ValVeS
Parts orderIng
The Mark DBAQ Series Valves are identified by a serial number located on the valve body. Please reference this
number when contacting a Jordan Valve Representative for technical support or part inquiries.
When shipped as part of a complete valve assembly with a Controls actuator, the same valve serial number can be
found on the actuator nametag as well as the valve body.
Figure 3: 2” Mark DBAQ Series
Item Description Item Description
1 Body, LCC, 900/1500#, RF 13 Packing Set, Upper Packing, PTFE
2 Bonnet, LCC, 3-9/16 Yoke Boss 14 Packing Set, Center Packing, PTFE
3 Bonnet Flange, LCC 15 Packing Set, Lower Packing, PTFE
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
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MKDBAQIM/0214/2K
Mark DBaQ SerieS angle Style Control ValVeS
Parts Listing – 2“ Mark DBAQ Series – Table 3
Item Description Part Number Quantity
1 Body, Mark DBAQ Series, 2”, LCC, 900/1500# RF 2U967522012 1
2 Bonnet, LCC, 3-9/16 Yoke Boss, 2” DBAQ 2N1363X0022 1
3 Bonnet Flange, LCC, 2” DBAQ 1N339222012 1
4* Pin*, Valve Stem/Plug Assembly, (3/4” Stem) See Table 6 1
5 Bonnet Gasket, 2” DBAQ, HT 1L120899442 1
6 Seat Ring Gasket, 2” DBAQ, HT 1N297899442 1
7* Stem*, 3/4", 316 SST, Valve Stem/Plug Assembly See Table 6 1
8 Hex Nut, 9/16”, ASME SA-194-2H 1C330624072 12
9 Stud Bolt, 9/16”x3.78, ASME SA-193-B7 1R387331012 12
10 Cage, Equal Percent, 17-4/HT1150 1P892339022 1
11 Seat Ring 1U274346052 1
12* Plug*, Valve 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 1E9448 1
17 Packing Flange Stud, Steel 1E9449 2
18 Packing Flange Nut, Steel 1E9446 2
19 Packing Box Ring, 316 SST 1J8733 1
20 Upper Wiper, Felt, 3/4” 1J8728 1
21 Packing Follower, 316 SST, 3/4” 1E9447 1
22 Packing Spring 1F1256 1
23 Special Washer, 3/4” SST 1F1250 1
24 Lower Wiper, TFE, 3/4" 1J8723 1
*Valve Stem, Valve Plug and Pin Sold as Assembly – See Table 6
** Items 12, 13 and 14 - Part of a complete Packing Set – See Table 7
Table 4:
Item Description Part Number Quantity
4, 7, 12 Valve Stem and Plug Assembly, Alloy 6, 3/4" 2U5986X0012 1
Table 5:
Item Description Part Number Quantity
13, 14, 15 PTFE Packing Set, 3/4” 1R2904 1
Jordan Valve, a division of Richards Industries
3170 Wasson Road • Cincinnati, OH 45209
513.533.5600 • 800.543.7311 • 513.871.0105 (f)
info@richardsind.com • www.jordanvalve.com
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