Taco DC-52DX-DU Operating instructions

Type
Operating instructions

Taco DC-52DX-DU is a versatile double check valve assembly designed to prevent backflow in commercial and industrial water systems. It features a compact, lightweight design for easy installation and maintenance. The valve is made of durable materials to withstand harsh conditions and ensure long-lasting performance. Its spring-loaded design provides positive closure to prevent backflow, protecting your water system from contamination. Taco DC-52DX-DU is ideal for various applications, including water supply lines, hydronic heating and cooling systems, and industrial process lines.

Taco DC-52DX-DU is a versatile double check valve assembly designed to prevent backflow in commercial and industrial water systems. It features a compact, lightweight design for easy installation and maintenance. The valve is made of durable materials to withstand harsh conditions and ensure long-lasting performance. Its spring-loaded design provides positive closure to prevent backflow, protecting your water system from contamination. Taco DC-52DX-DU is ideal for various applications, including water supply lines, hydronic heating and cooling systems, and industrial process lines.

B A
Hinge Edge of Door
7
/8"
(22mm)
7
/4"
(19mm)
Speed Regulating Valves
toward Hinge Edge of Door
B A
C
Shaft
3
1
/
4
"(44.5mm)
Arm Shoe
Arm Screw and
Lockwasher
Back-Check
Adjustment Valve
6 holes for #14
All-Purpose or 1/4-20
(M6x1.0) Machine
Screws: 4 for Closer
and 2for Arm Shoe.
Pinion Cap
1
1
/
8
"
(28.5mm)
1
2
3
4
2
4
1
3
POSITION OF ARMS
AND INDEX SETTINGS
Main arm
Index mark
Locknut
Forearm
Elbow Elbow
Forearm
Locknut
Main arm
Index mark
90°
90°
Right hand door Use index mark4
Left hand door Use index mark1
B A
C
Hinge Edge of Door
3
/4"
(19mm)
1
/2"
(12.7mm)
6 Holes for #14
All-Purpose or 1/4-20
(M6x0.1) Machine
Screws: 4 for Closer
and 2 for Arm Shoe
1
1 /2"
(38mm)
3
1 /4"
(44.5mm)
Speed Regulating Valves
toward Hinge Edge of Door
Pinion Cap
Back-Check
Adjustment Valve
Reveal
Arm Screw and
Lock washer
Arm Shoe
Back-Check
Adjustment Valve
1
2
3
4
1
2
3
4
AND INDEX SETTINGS
POSITION OF ARMS
Main arm
Index mark
Locknut
Forearm
Elbow
Elbow
Forearm
Locknut
Main arm
Index mark
90°
Right hand door Use index mark4
Left hand door Use index mark1
90°
DOOR CLOSER
SIZE 3/4/5
NO HOLD OPEN
INSTALLATION INSTRUCTION
PARALLEL ARM INSTALLATION
CLOSER MOUNTED ON DOOR ON PUSH SIDE
THIS TEMPLATE COVERS REGULAR ARM INSTALLATIONS TO 180°OPENINSGS.
Parallel bracket accessory required and must be ordered extra.
Hinge Edge of Door
3
/4"
(19mm)
Speed Regulating
Valves Away From
Hinge Edge of Door
4 holes for #14
All-Purpose or 1/4-20
(M6x1.0) Machine
Screws
7
2 /8"
(73mm)
Back-check
Adjustment Valve
Parallel
Bracket
Stud
Shaft
Pinion Cap
LEFT HAND DOOR ILLUSTRATED. Same dimensions
apply for Right Hand Door measured from hinge edge.
A
B C B C
FOR OPENING
TO 120°
FOR OPENING
180°~ 120°
1
9 /16"(230mm)
15
7 /16"(202mm)
5
8 /8"(219mm)
7
6 /16"(164mm)
1
7 /8"(181mm)
C
3
2 /
4
"
(70mm)
2"
(51mm)
3
/8"
(10mm)
3
/4"(19mm)
5
/16"(8mm)
4 holes for #14 wood or
1
/4 20 (M6x1.0) machine screws
Parailel Brocket
Arm Screw and
Lockwasher
POSITION OF ARMS AND INDEX SETTINGS
Left hand door, use index mark 3
ILLUSTARTION "A"
Right hand door, use index mark 2
ILLUSTARTION "B"
Index Mark
Forearm
Locknut
Main arm
Main arm
Locknut
Forearm
Index Mark
Closing Speed
Regulating Screw
Latching Speed
Regulating Screw
Slow
Fast
Closing speed
Latching speed
SIZE
MAXIMUN DOOR WIDTH
INTERIOR
DOOR SIZE
EXTERIOR DOOR SIZE
SWING OUT SWING IN
3
4
5
28"(711mm)
40"(1016mm)
48"(1219mm)
40"(1016mm)
48"(1219mm)
52"(1321mm)
32"(813mm)
38"(965mm)
40"(1016mm)
12
1. Select degree of opening and use dimensions shown in above template to mark
four holes on door for closer and four holes on frame for parallel bracket.
1
2. Drill pilot holes in door and frame for #14 wood screws or drill and tape for /4-20
(M6X1.0) machine screws.
3. Mount closer on door WITH SPEED REGULATING SCREW AWAY FROM
HINGE EDGE.
4. Attach parallel bracket to door stop as illustrated.
5. Using a wrench on the square shaft on bottom of closer, rotate shaft approximately
45° toward hinge edge of door. Hold and place main arm on shaft on top of closer
at proper index mark as illustrated. FOR LEFT HAND DOOR No . 3 (illustration
"A")FOR RIGHT HAND DOOR No .2 (illustration"B"). Tighten arm screw with
lockwasher securely.
6. Remove the arm shoe from the forearm (arm shoe is not used in this application)
and place forearm on parallel bracket stud and tighten screw securely.
7. Adjust length of forearm so when it is attached to main arm, the main arm will
be slightly away from parallel with closed door, and assemble at elbow then tighten
locknut.
INSTALLATION INSTRUCTIONS
ADJUSTMENT INSTRUCTIONS
CLOSING POWERAs per "Spring Tension Chart" select the correct number
5
of turns for spring adjustment nut that corresponds with the installation. Using /32"
(4mm) allen key, turn adjustment nut full 360°clockwise turns to desired setting.
SPEEDDoor closing and latching speeds are controlled by #1, #2 speed
regulating screw separately.
A. Clockwise turns slow the speed. B. Counterclockwise turns increase the speed.
BACK-CHECK ADJUSTMENTis controlled by the adjustment valve, BACK-
CHECK is now set for soft action. To INCREASE Back-check action turn valve
CLOCKWISE. To DECREASE, or to TURN OFF Backcheck action turn valve
COUNTER CLOCKWISE.
STANDARD INSTALLATION
CLOSER MOUNTED ON DOOR ON PULL SIDE
THIS TEMPLATE COVERS REGULAR ARM INSTALLATIONS TO 180°OPENINGS.
RIGHT HAND DOOR ILLUSTRATED. Same dimensions
apply for Left hand door measured from hinge edge.
A
B
FOR OPENING FOR OPENING
TO 120° 120°~180°
C
B C
1
9 /16" (230mm)
7
5 /8 "(149mm)
1
12 /1 6" (306mm)
1
3 /4" (82.5mm)
7
8 /8" (225mm)
A
B
FOR OPENING FOR OPENING
TO 120° 120°~180°
C
B C
1
9 / " (230mm)
16
13
5 /16 " (148mm)
12" (305mm)
1
4 /8 " (105mm)
5
10 /16 " (262mm)
TOP JAMB INSTALLATION
CLOSER MOUNTED TOP JAMB ON PUSH SIDE OF DOOR
THIS TEMPLATE COVERS REGULAR ARM INSTALLATIONS TO 180°OPENINGS.
1
3
Reveals of 2 /4" (70mm) to 5 /2"(140mm) require "Top Jamb" Forearm Extender Accessory and must be ordered extra.
LEFT HAND DOOR ILLUSTRATED. Same dimensions
apply for Left hand door measured from hinge edge.
SIZE
SIZE
MAXIMUN DOOR WIDTH
INTERIOR
DOOR SIZE
EXTERIOR DOOR SIZE
SWING OUT SWING IN
34"(864mm)
34"(864mm)48"(1219mm)
48"(1219mm)52"(1321mm)
40"(1016mm)
40"(1016mm)
40"(1016mm)
32"(813mm)
3
4
5
MAXIMUN DOOR WIDTH
INTERIOR
DOOR SIZE
EXTERIOR DOOR SIZE
SWING OUT SWING IN
32"(813mm)
SPRING TENSION-Door size Chart
1
2
3
4
1
2
3
4
3BC
4BC
5BC
3BC
4BC
5BC
3
4
5
3BC
4BC
5BC
34"(864mm)
34"(864mm)
40"(1016mm)
40"(1016mm)
40"(1016mm)
48"(1219mm)
48"(1219mm)52"(1321mm)
Back-Check
Adjustment Valve
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Taco DC-52DX-DU Operating instructions

Type
Operating instructions

Taco DC-52DX-DU is a versatile double check valve assembly designed to prevent backflow in commercial and industrial water systems. It features a compact, lightweight design for easy installation and maintenance. The valve is made of durable materials to withstand harsh conditions and ensure long-lasting performance. Its spring-loaded design provides positive closure to prevent backflow, protecting your water system from contamination. Taco DC-52DX-DU is ideal for various applications, including water supply lines, hydronic heating and cooling systems, and industrial process lines.

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