DualDisc_8000.pdf

8/14/2019 DualDisc_8000.pdf

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A. RETAINER PLUGSRetain hinge and stop pins whilep r o v i d i n g c o m p r e s s i o n t os tab i l iza t ion spheres .

B. STABILIZATION SPHERESStabilize hinge and stop pins,preventing vibration and wear.

C. THRUST BEARINGSReduce friction and wear duringdisc action.

D. HINGE PINHeavy duty construction withincreased bearing surface andstrength.

E. STOP PINPositions discs on slight angle duringflow preventing disc flutter.

F. SPRINGSpecially designed torsion springcloses discs upon pump shutdownminimizing water hammer normallyassociated with valve shutoff. Alsoprovides for Lift and Pivot disc action.Cycle tested 50,000 cycles to assurelong, trouble free life.

G. VULCANIZED SEAT Pressure sensitive seating with full discoverlap provides positive seating at

high and low pressures.

H. ALIGNMENT FINSProvide for precise alignment in

ANSI 125 and ISO PN10 and PN16installations. (Patent Pending.)

I. DISCDual Disc design increases valvesensitivity to flow, allowing discs toclose quickly on pump shutdown.

J. BODY Choose between compact waferdesign to minimize space require-ments (pictured) or grooved end forease of installation. Both provide lowinitial installation cost and minimalmaintenance. Compact wafer stylereduces installation time, minimizesspace required for installation, andresults in low initial unit cost. Align-ment fins provide precise alignmentfor ANSI 125 and ISO PN10 and PN

16 installations.

Copyright 2005 Val-Matic Valve & Mfg. Corp.

AB

C D

E

F

H

G

J

I

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...THAT MAKE VAL-MATIC DUAL DISC CHECK VALVE COSTEFFICIENT & RELIABLE

With todays demanding systemrequirements, engineers must specifypiping components that are bothCOST EFFICIENT and RELIABLE. Thedesign of the Val-Matic DUAL DISC Check Valve answers those n eeds byi n c o r p o r a t i n g m a n y u n i q u echaracteristics not found in similarcheck valves. 2 - 12 (50 -300mm)valves include Ductile Iron construc-tion, with a 250 psi (17.2 BAR), coldworking pressure rating. They are UL/

FM approved and available in Wafer(ANSI 125, ISO PN10, ISO PN16) andGrooved End IPS connections. Sizes14 (350mm) and larger are availablein cast and ductile iron.

INSTALLATION COST: Choosebetween compact wafer designto minimize space requirements orgrooved end for ease of installation.Both provide low initial installation costand minimal maintenance. Thefollowing quality features you expect

from Val-Matic can be found in boththe wafer and grooved end valves.

OPERATING COST: Carefulattention to inlet contouring andstreamlined flow design, combinedwith an expansive flow area, resultin unusually low pressure losscharacteristics. The resulting lowpower consumption translates intodollar savings throughout the longlife of the valve.

PRODUCT RELIABILITY: Designfeatures such as Lift and Pivot Disc

Action, Disc Seal Overlap, PressureSensitive Seating, Stabilization Spheres,Disc Stabilization, and Flow SensitiveClosure, combined with carefulselection of materials of construction,reflect Val-Matics efforts to build aquality valve. These efforts result ina COST EFFICIENT and RELIABLEproduct that will provide many yearsof trouble free service.

LIFT AND PIVOT DISC ACTION: This feature, designed to give longervalve life, is activated during theopening and closing cycles. It works bya combination of clearance betweenthe pivot pin and disc bores, and theplacement of the legs of the torsionspring. With this design the disc willalways lift first at the pivot on opening,and not return until the disc is closed,preventing wear between disc and seatsurfaces.

STABILIZATION SPHERES: Theseresilient, synthetic spheres inserted intothe pivot and stop pin holes are com-pressed against the pins and effectivelystabilize them during flow conditions,eliminating vibration and wear.

PRESSURE SENSITIVE SEATING:This design provides for minimum disc-to-seat contact at low pressures, andmaximum contact at high pressuresresulting in positive seating at all timeswithout seal destruction.

DISC STABILIZATION: When valve is fully open, the discare p o s i t i o n e d o n a s l i g ha n g l e , causing the flow velocity toforce the discsfirmly againstthe stop pin.The ensuingvector forcesact to stabilizethe disc duringflow conditionsthereby pre-venting exces-sive wear dueto disc flutter.

DISC SEAL OVERLAP: Conbetween the seal and the disc isuniquely designed to eliminateindentation ridges found in designswhich do not

allow the discto fully overlapthe seal. Inden-tation ridgescaused by valvedesigns withdiscs smaller indiameter thanthe seal canresult in valveleakage.

FLOW SENSITIVE CLOSURE:The torsion spring closes the valvewhen the flow is reduced, preventingflow reversal and lessening thepotential for water hammer normallyassociated with conventional swingcheck valves.

1. DISC INCLOSED

POSITION

2. HEELLIFTS ASFLOW

BEGINS

3. DISCPIVOTS AS

FLOWINCREASES

4. TOETOUCHES AS FLOWDIMINISHES

5. DISCRESEATED-

FLOWSTOPPED

...THAT MAKE

DESIGNFEATURES


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Maximum Pressure-Termperature RatingsMaximum Non-Shock Working Pressure PSIG (BAR) ANSI Class 125, ISO PN 10 - 16

Temp. Ductile Iron Cast Iron Temp. Ductile Iron Cast Iron

F 2 - 12 14 - 24 30 - 60 C 50 - 300mm 350 - 600mm 750 - 1500mm150 250 150 150 65 17.2 10.3 10.3200 235 135 115 95 16.2 9.3 7.9250 220 125 85 120 15.2 8.6 5.9

Hydro Test 500 230 230 Hydro Test 35 16 16

Materials of ConstructionComponent Standard Optional

Body 2 - 12 50 - 300mm Ductile Iron ASTM A536 Gr. 65-45-12 N/A

14 - 60 350 - 1,500mm Cast Iron ASTM A126, Class B Ductile Iron ASTM A536 Gr. 65-45-12

Disc2 - 12 50 - 300mm Bronze ASTM B584, C83600 N/A

14 - 60 350 - 1,500mm Aluminum Bronze ASTM B148, Alloy C95200 Ductile Iron, Electroless Nickel Plated

Seal Buna-N (NBR) Viton (FKM)

Spring 316 SS ( 2-16 /50-400mm), 17-7 PH ( 18- 60 /450-1,500mm) N/A

Trim 316 Stainless Steel N/A

Exterior Coating Universal Primer ANSI/NSF 61 Fusion Bonded Epoxy**FBE also available on interior.

FLOW COEFFICIENTS

Series8800W

IN 2 2.5 3 4 5 6 8 10 12

*Cv 76 161 224 400 648 1,060 1,890 3,340 5,270

MM 50 65 80 100 125 150 200 250 300

**Kv 65 137 191 341 553 904 1,612 2,850 4,495

Series8800G

IN 2 2.5 3 4 5 6 8 10 12

*Cv 77 129 209 358 573 898 1,740 3,180 4,950

MM 50 65 80 100 125 150 200 250 300

**Kv 66 110 178 305 489 766 1,484 2,712 4,222

Series 8800Size

*Cv **Kv Size

*CV **IN MM IN MM

14 350 5,200 4,435 36 900 50,000 42,6

16 400 7,200 8,018 42 1,100 72,000 61,4

18 450 9,400 10,240 48 1,200 97,000 82,7

20 500 12,000 15,780 54 1,144 130,000 112,

24 600 18,500 28,150 60 1,500 180,000 155,

30 800 33,000 42,650

*Cv = The number of U.S. gallons/minute of 60 F water that will flow through the valve with a 1 PSI pressure drop across the valve.**Kv = The number of cubic meters per hour of 20 C water that will flow through a valev with a 1 bar pressure drop across the valve.

HEADLOSSCHART

FLOW OF WATER IN METERS PER HOUR

FLOW OF WATER IN GALLONS PER MINUTE

H E A D L O S S I N F E E T O F W A T E R HE A

DL O S S I NME T E R S OF WAT E R

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ValveSize

A1 A2 B1 B2 C D1 D2 EWafer

Wt. Lbs.(KG)

GroovedWt. Lbs.

(KG)2

50 mm2.1354.0

4.66118.3

4.13104.8

5.13130.2

.194.8

2.5665.1

2.3860.3

1.9449.2

41.8

41.8

2.565 mm

2.3860.3

4.91124.6

4.88123.8

5142.9

.317.9

3.0677.8

2.8873.0

2.3158.7

52.3

52.3

380 mm

2.6366.7

5.31134.9

5.38136.5

6136.5

.512.7

3.6993.7

3.588.9

2.8873.0

73.2

83.6

4100 mm

2.6366.7

5.38136.5

6.88174.6

7.75196.9

125.4

4.63117.5

4.5114.3

3.8898.4

94.1

94.1

5125 mm

3.2582.6

5.72145.3

7.75196.9

7.56192.1

1.1328.6

5.69144.5

5.56141.3

4.81122.2

135.9

135.9

6150 mm

3.7595.3

6152.4

8.75222.3

8.63219.1

1.2531.8

6.75171.5

6.63168.3

5.75146.1

198.6

188.2

8200 mm

5127.0

6.72170.7

11279.4

12.25311.2

1.3133.3

8.75222.3

8.63219.1

7.63193.7

3817.2

3013.6

10250 mm

5.5139.7

7.78197.6

13.38339.7

13.75349.3

2.563.5

10.88276.2

10.75273.1

9.56242.9

6529.5

5625.4

12300 mm

7.13181.0

8.19208.0

16.13409.6

17.38441.3

2.3860.3

12.88327.0

12.75323.9

11.38288.9

9442.6

8136.7

14350 mm

7.25184.2

N/A 17.75450.9

N/A 3.2582.6

14.38365.1

N/A 12.5317.5

18784.8

N/A

16400 mm

7.5190.5

N/A 20.25514.4

N/A 4.5114.3

16.38415.9

N/A 15381.0

270122

N/A

18450 mm

8203.2

N/A 21.63549.3

N/A 5.38136.5

18.38466.7

N/A 17431.8

330150

N/A

20

500 mm

8.38

212.7N/A 23.88

606.4N/A 6.38

161.9

20.25

514.4N/A 19

482.6

424

192N/A

24600 mm

8.75222.3 N/A

28.25717.6 N/A

8.5215.9

24.25616.0 N/A

23584.2

589267 N/A

30800 mm

12304.8 N/A

34.75882.7 N/A

9.5241.3

30762.0 N/A

28.5723.9

1,112504 N/A

36900 mm

14.5368.3

N/A41.251,048

N/A12

304.836

914.4N/A

34.5876.3

1,864846

N/A

421,050 mm

17431.8

N/A 481,219

N/A 13.75349.3

421,067

N/A 40.51,029

2,8891,310

N/A

481,200 mm

20.63523.9

N/A N/A 59.51,511

17431.8

481,219

N/A 46.51,181

5,5252,506

N/A

541,350 mm

21.25539.8

N/A N/A 66.251,683

20508.0

541,372

N/A 52.51,334

7,0003,175

N/A

601,500 mm 26660.4 N/A N/A 731,854 19482.6 601,524 N/A 58.51,486 10,1004,580 N/A

NSTALLATION DIMENSIONS

2.5 - 1265 - 300mm

2.5 - 1665 - 400mm

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Make the change to QUALITY!Specify V

Val-Matics quality of design and meticulous workmanship has setthe standards by which all others are measured. Quality designfeatures such as Type 316 stainless steel trim as standard on AirRelease, Air/Vacuum and Combination Air Valves...combinedresilient/metal to metal seating for Silent Check Valves...stabi-lized components that provide extended life of the Dual Disc

Check Valves...high strength and wear resistant aluminum bronzetrim as standard for Tilted Disc Check valves...unrestricted fullflow area through Swing-Flex Check Valves...heavy duty stainlesssteel screened inlet on Sure Seal Foot Valves...a Cam-Centric

Plug Valve with more requested features than any other eccentricplug valve, and the American-BFV Butterfly Valve that provida field replaceable seat without the need for special tools. Thesefeatures coupled with our attention to detail put Val-Matic valvesin a class by themselves.

Val-Matic is totally committed to providing the highest qualityvalves and outstanding service to our customers. Complete cutomer satisfaction is our goal.

V VAL-MATIC VALVE AND MANUFACTURING CORP.905 RIVERSIDE DRIVE ELMHURST, I L 6630/941-7600 FAX: 630/941-8042www.valmatic.com valves@ valmatic.com

DualDisc_8000.pdf

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