Float-Type Regulator Valve


Float-Type Regulator Valve
UFSF type
(PAT.)

Liquid level and constant flow rate regulation with compact float

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Selection chart & Outer dimensions

Specifications/Performance

Inlet pressure (Primary pressure):

Max. 1MPa (For JIS 10K standard)

Applicable liquid:

Various liquids at temperatures of 0-70 degree C (Please inquire for special liquids.)

Flow rate accuracy of UFSF-C type:

+/- 10%

Flange standard:

JIS 10K, JIS B2062 Waterworks standard

Material

(Valve case/Valve disk):

FC/SUS, FCD/SUS
Besides the above, a wide variety of materials are available, such as YOKOTA's duplex type stainless steel YST130N with high corrosion resistance.

(Float):

FRP

Cavitation characteristics:

The allowable cavitation coefficients (cc) are:
With a bore less than 100mm: cc = 0.45
With a bore more than 150mm: cc = 0.24
For details, please refer to this page.



Selection chart

UFSF-S type (Standard type)

UFSF-C type (Full range constant flow regulation type)


Float-Type Regulator Valve / Selection chart

How to use the above selection chart

Plot point C with x-axis value A and y-axis value B, where A is a planned differential pressure between the front and the rear of the valve, and B is a planned flow rate. Then select a valve with a bore size line immediately above point C.
In the above example, a 250mm bore valve is selected.

Note:

The above selection chart is based on the maximum flow speed of 3m/sec. If a planned maximum flow speed exceeds this level, please contact us.

The flow rate set by the maximum flow rate adjustment screw should be more than 10% of the maximum flow rate.


Bore
mm
Model No.
Maximum flow rate
Standard pressure type
Low pressure type
(m3/min)
(l/sec)
(m3/min)
(l/sec)

80

UFSF-080C

0.36

6

0.24

4

100

-100C

0.66

11

0.36

6

150

-150C

1.50

25

0.90

15

200

-200C

2.64

44

1.50

25

250

-250C

3.90

65

2.28

38

300

-300C

6.00

100

3.60

60

350

-350C

6.60

110

3.96

66

400

-400C

8.70

145

5.10

85

450

-450C

12.90

215

7.50

125

500

-500C

13.80

230

8.10

135

600

-600C

19.20

320

11.40

190

Note:

The flow rate set by the maximum flow rate adjustment screw should be more than 10% of the maximum flow rate.

The model No. for low pressure type valves is followed by "L". (e.g. UFSF-200CL)

Operating differential pressure
Standard type: 50-500kPa
Low differential pressure type: 20-200kPa



Outer dimensions/Installation dimensions

Independent float tank type (The adjustment plug key and the float tank are optional accessories.)

Float-Type Regulator Valve / Independent float tank type


Submerged type

Integrated float tank type (Bore: 150mm or less)

Float-Type Regulator Valve / Submerged type

Float-Type Regulator Valve / Integrated float tank type

Float-Type Regulator Valve / Installation example


The dimensions indicated in the drawings are minimum dimensions which take into account required maintenance such as assembly and disassembly and refer only to cases where there is a farm pond adjacent to the valve chamber.
If an independent valve chamber is added to a pipeline (i.e. there is no farm pond adjacent to the valve chamber), depending on flow conditions, there may be rapid fluctuations in water level in the float tank, causing water hammer at the front or the rear of the valve chamber. Therefore avoidance of such water hammer should be considered in deciding the size of the valve chamber. For deciding its size, it is recommended to refer to guidelines such as "Pipeline Design Manual" supervised by the Ministry of Agriculture, Forestry and Fisheries of Japan. If you need more help, please contact us.

Since leg parts are not provided for valves with a bore of 150mm or less, please support those valves with the piping.

If air is sucked into the outflow pipe of the valve chamber, a partition plate should be installed and the valve's discharge opening should be placed below the lowest water level.

To mount the float tank, please affix it to the side wall of the chamber with a band, or, if placing it on the bottom of the chamber, provide a passage hole at the lower part of the float tank.

Since the float can be attached on either the left or right side of the flow direction, please specify when making an inquiry.

To simplify installation, a unit with the valve preinstalled in a box culvert can be provided. Please inquire.



Unit: mm

Bore
d
Model
No.
Dimensions
Mounting
Weight of main body
Flange (Waterworks standard)
Valve chamber (minimum dimensions)
Set water level
A
B
H1
H2
E
F
G*
J
W
Z
(kg)
D
C
n-h
L
M
N
P
R
S
T

80

UFSF-080

280

440

550

95

420

200

442

170

-

-

35

211

168

4-19

1030

1240

1380

280

400

10

750

100

100

350

480

570

127

420

300

442

220

-

-

80

238

195

4-19

1160

1290

1480

290

400

10

800

150

150

450

630

635

153

565

300

592

240

-

-

120

290

247

6-19

1415

1570

1750

550

700

30

920

200

200

600

740

690

220

670

450

700

360

320

23

230

342

299

8-19

1720

1780

2010

690

850

100

1100

250

250

700

850

850

250

670

450

700

380

500

23

380

410

360

8-23

1975

1915

2375

780

950

200

1200

300

300

800

950

885

295

760

500

800

390

440

23

500

464

414

10-23

2230

2110

2615

800

1100

240

1300

350

350

900

1000

960

305

760

500

800

400

480

23

590

530

472

10-25

2485

2185

2895

920

1150

280

1400

400

400

1000

1150

1040

320

855

500

900

410

660

25

800

582

524

12-25

2740

2430

3180

970

1200

280

1500

450

450

1100

1300

1240

450

935

550

1000

430

600

27

1200

652

585

12-27

2995

2675

3585

1000

1300

350

1800

500

500

1200

1300

1240

450

935

550

1000

430

600

27

1300

706

639

12-27

3250

2700

3790

1000

1300

350

1800

600

600

1400

1400

1435

500

1030

800

1100

700

700

27

2300

810

743

16-27

3760

2920

4395

1300

1600

400

2200

The dimension G indicates the inner diameter of the float tank.


Specifications stated here may be subject to change without notice due to product improvement.

Features
Structure
Technical data
Selection & Dimensions
Inquiry form


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