PRODUCT QUERY

Flanged Backflow Preventer

Flanged Backflow Preventer

  • PN 10/16
  • Material
    Ductile iron
  • Nominal diameter
    DN65-800
  • Face to face standard
    Series 3 of BS EN558-1
  • Flange drilling
    BS EN 1092
  • Document Download.pdf
Features

Flange connection,compact product structure,horizontal installation.


Provide high-grade protection to prevent pressure and siphon backflow.


Full waterway,wide body and double independent check valve design ensure the stability of operating conditions.


The streamline design of the main valve disc ensures low friction and flow state,providing low pressure loss at the highest flow rate.


Material

No.

Part

Material

1

Body

D.I.

2

Check Valve Spring

Stainless Steel 304

3

Check Valve Stem

Stainless Steel 304

4

Bonnet

D.I.

5

Circlip

Stainless Steel 304

6

Check Valve Seat

Stainless Steel 304

7

Check Valve Disc

Stainless Steel 304+EPDM

8

Drain Valve Body

Stainless Steel 304

9

Drain Valve Disc

Brass+EPDM

10

Drain Valve Stem

D.I.

11

Drain Valve Gasket

EPDM

12

Drain Valve Bonnet

D.I.

Main Dimention

  • DN$mm
    in.
    A
    B
    C
    D
    E
    F
    Φ
    n-Φ$PN10
    n-Φ$PN16
    W$kg
  • 65
    2-1/2
    619
    279
    170
    185
    185
    315
    200
    4-19
    4-19
    65
  • 80
    3
    691
    331
    180
    200
    200
    365
    240
    8-19
    8-19
    81
  • 100
    4
    795
    415
    190
    220
    210
    400
    280
    8-19
    8-19
    112
  • 150
    6
    950
    530
    210
    285
    260
    505
    280
    8-23
    8-23
    176
  • 200
    8
    1105
    645
    230
    340
    310
    595
    360
    8-23
    12-23
    262
  • 250
    10
    1250
    750
    250
    400
    375
    675
    360
    12-23
    12-28
    455
  • 300
    12
    1400
    860
    270
    455
    435
    792
    450
    12-23
    12-28
    603
  • 350
    14
    1568
    985
    290
    515
    495
    895
    450
    16-23
    16-28
    748
  • 400
    16
    1720
    1100
    310
    575
    550
    1010
    450
    16-28
    16-31
    1018
  • 500
    20
    2100
    1400
    350
    715
    675
    1152
    640
    20-28
    20-34
    1350
  • 600
    24
    2380
    1600
    390
    840
    750
    1344
    640
    20-31
    20-37
    1800
  • 800
    32
    3170
    1850
    660
    1015
    900
    1600
    1000
    24-34
    24-40
    2300