ES-F-805YD
S P E C I F I C AT I O N S H E E T
Series 805YD
Double Check Valve Assemblies Size: 21⁄2" - 10" (65mm - 250mm) The FEBCO Series 805YD Double Check Valve Assemblies are used to prevent backflow of pollutants that are objectionable but not toxic. Double Checks may be installed under continuous pressure service and may be subjected to backpressure. Double checks can be used in sprinkler irrigation systems, fire protection without chemical additives, protection of industrial plants, industrial in-plant plumbing systems and other systems requiring protection. Local codes may vary; consult authorities for specific approved applications.
805YD
Features • • • • •
The DuraCheck features all stainless steel check assemblies for corrosion resistance, reduced fouling and longer valve life. DuraCast ductile iron body for superior strength, corrosion resistance and lighter weight. Low head loss Documented flow curves established by University of Southern California Foundation for Cross-Connection Control and Hydraulic Research. End Connection – Flanged ANSI B16.1
Operation In a nonflow condition the check valves hold 1psi (7kPa) minimum in the direction of flow. In a flow condition the check valves are open, proportional to the flow demand. In a backflow condition both checks will close until the resumption of normal flow.
Options • Silicon Seat Discs • OS&Y Gate Valves • NRS Gate Valves
Approvals – Standards • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California.* • ANSI/AWWA Conformance (C510-89) *
1015
B64.5
* 3" - 10 " (80 - 250mm)
* V alves must be supplied with resilient seated shutoff valves for USC and FM approvals to be in effect. UL and FM Listings only applicable with approved OS&Y gates.
Pressure – Temperature Max. Working Pressure:
175psi (12.1 bar)
Hydrostatic Test Press:
350psi (24.1 bar)
Temperature Range:
32ºF to 140ºF (0ºC to 60ºC)
Specifications
Materials
Double check assemblies shall consist of two independent "Y" configured check valves. Checks shall be of the spring loaded, center stem guided type. Ductile iron bodies shall be flanged ANSI B16.1, Class 125 and epoxy coated internally 10-20 mils and epoxy coated externally. The assembly shall include flanged, full port resilient wedge shutoff valves and four full port ball valve testcocks, considered integral to the assembly. All double check valve assemblies shall be constructed all internal parts, including seat rings, can be serviced without removing the device from the line. The assembly shall meet or exceed requirements of ASSE standard 1015, AWWA standard C506-78, and the USC Foundation for Cross-connection Control and Hydraulic Research, seventh edition. Double check valve assemblies shall be FEBCO, 805YD prior approved equal.
Main Valve Body/Cover:
Ductile iron ASTM A-536 grade 65-45-12 epoxy coated internal 10-20 mils
Main Valve Trim
Bronze
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Internal Check Assembly: Stainless Steel Elastomers:
Nitrile
Springs:
Stainless Steel
Internal Check Assembly: Stainless Steel Shutoffs:
Non-rising stem, RW gates, standard. Others available.
Coating:
Fusion bonded epoxy AWWA C550-90, USC FCCC & HR approved.
FEBCO product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact FEBCO. FEBCO reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on FEBCO products previously or subsequently sold.
Installation
Capacity
Model 805YD Double Check Backflow Preventers should be installed with adequate clearance and easy accessibility for testing and maintenance and must be protected from freezing. The assembly may be installed horizontally or vertically with flow up. Refer to local codes for specific installation requirements. Some codes may prohibit vertical installations. Larger sizes should be installed horizontally for ease of service. Thermal water expansion and/or water hammer down stream of the backflow preventer can cause excessive pressure. Excessive pressure situations shoul be eliminated to avoid possible damage to the system and assembly. FEBCO Series 805YD
Headloss
kPa psi 15
69
10
34
5
Headloss
0 0 0 kPa psi
21⁄2" (65mm)
0
Protective Enclosure
103
15
69
10
34
5
5 1.5
50 190
0 0 0 kPa psi Headloss
103
15
69
10
34
5
100 379 5 1.5
0
0 0 0 kPa psi 103 15 Headloss
Support 3" (80mm) and larger
Dimensions – Weights
69
10
34
5
0
0
100 379
0 0 kPa psi Headloss
C D
15
69
10
34
5
0
0
A
103
15
69
10
34
5
0
E
0
150 570 10 3.1
200 760
15 4.6
300 1140
10 3.1
4" (100mm)
200 760 5 1.5
400 1520
200 760
7.5 2.3
400 1520 5 1.5
0 0 kPa psi Headloss
B
103
100 379 7.5 2.3
250 950
300 gpm 1140 lpm 20 fps 6.1 mps
3" (80mm)
0
30" Max. (762mm) 12" Min (304mm) Suggested
Water Meter
103
300 1140 7.5 2.3
400 1520 10 3.1
400 gpm 1520 lpm fps mps
15 4.6
500 1900
600 gpm 2280 lpm 15 fps 4.6 mps
6" (150mm)
7.5 2.3
800 3040
1200 4540
10 3.1
8" (200mm)
800 3040 5 1.5
1200 4540 7.5 2.3
1600 6060 10 3.1
15 4.6
1600 gpm 6060 lpm fps mps
2000 7600 15 4.6
2400 gpm 9090 lpm fps mps
2500 11400
3000 gpm 13250 lpm 10 fps 3.1 mps
10" (250mm)
0 0
500 1900
1000 3800
1500 5680 5 1.5
2000 7600 7.5 2.3
Flow Rate (gpm) Velocity (fps)
Size: 21⁄2 - 10" (65 - 250mm) size (DN)
Dimensions A
B
in.
mm
in.
mm
in.
mm
in.
21⁄2 3 4 6 8 10
65 80 100 150 200 250
373⁄16 4111⁄16 507⁄16 5911⁄16 693⁄16 843⁄16
945 1059 1281 1516 1757 2138
221⁄16 259⁄16 325⁄16 389⁄16 461⁄16 581⁄16
560 649 821 980 1170 1475
125⁄8 127⁄8 143⁄8 187⁄8 231⁄2 271⁄2
C (NRS)
Weight C (OS&Y)
mm
in.
321 327 365 479 597 699
163⁄8 221⁄4 231⁄4 301⁄8 373⁄4 48
D
E
mm
In.
mm
In.
mm
lbs.
kgs.
416 565 591 765 959 1219
71⁄2 81⁄16 11 14 18 22
191 205 279 356 457 559
51⁄4 6 63⁄4 81⁄4 91⁄2 101⁄2
133 152 172 210 241 267
230 240 390 675 1130 1530
104.3 108.9 176.9 306.2 512.6 694.0
Dimensions shown are nominal, allowance must be made for normal manufacturing tolerances.
A Watts Water Technologies Company
USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. (559) 441-5300 • Fax: (559) 441-5301 • www.FEBCOonline.com Canada: 5435 North Service Rd. • Burlington, ONT. • L7L 5H7 • Tel. (905) 332-4090 • Fax: (905) 332-7068 • www.FEBCOonline.ca
ES-F-805YD 0708
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