Type LH45-16 flow Restriction check valve
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Biens d'équipement

Type LH45-16 flow Restriction check valve

Quantité : 9999   Prix : negotiable

Type LH45-16 series of flow restriction check valve is mainly used for parallel-connected pumps. It is installed at the outlet of the pump to restrict the working flux and prevent the reflux that may occur when the pumps stop working. Installed with guide valve, the main valve appears compact in structure and light in weight.
The product has been listed in the national major products and it was granted another name called the Automatic Controller of Self-operated Pump Lift.

Function and main operational principle:

●Flow Restriction
Installed at the outlet of the pump, it is used to restrict the working flux of pump to ensure that it works at much higher efficiency, when single pump is started or part of the designed pumps are operated. It is also used to prevent the over loading and damage of motor due to excess rated current and hence achieve an effect of energy economization when the pump is working under low lift, big flux and low efficiency.
The principle for flow restriction is as follows:
With reference to the designed regime lift of the pump, the guide valve will automatically detect and control the actual pump lift to restrict the working flux of pump and the load of motor.
When a controlled working lift is set to the check valve, it will shut and make the actual working lift larger when the working lift of pump is lower than the controlled lift of check valve. On the contrary, the check valve will fully open and appears little resistance when the working lift of pump is larger than the designed lift.
The controlled lift can be set according to the motors rated current or high-efficiency regime. The working lift of the check valve is adjustable and normally the set value is the designed regime lift when check valve leaves factory.

● Reflux Prevention

This valve performs exactly the same with that of slight resistance, retard shut check valve in terms of reflux prevention. It causes no closure noise and no reflux.

Technical Parameters

DN

Face to face
length (L)

Max working flux

H1

H

Local resistance coefficient

50

230

25

140

220

65

290

50

160

255

80

310

70

170

267

100

350

100

195

302

4~6

125

400

150

268

400

4~6

150

480

250

297

450

4~6

200

495

400

340

523

3~6

250

622

800

423

635

3~6

300

750

1200

575

820

2~5

350

787

1400

585

860

2~5

400

978

1800

630

935

2~4

450

978

2400

695

1030

2~4

500

1016

3000

575

1025

2~4

600

1295

4000

872

1310

2~4

700

1448

6000

952

1407

2~4

800

1956

7500

1050

1560

2~4

Localisation : xianxian yabo road 26, 062500 hebei,
Personne à contacter : Fa Lin, 863174633220

mxh586

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Détail
Inscrit le 28 avril 2015

Numéro d'identification de la société : 15002400

mxh586

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Type LH45-16 flow Restriction check valve

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lh45, check, flow, restriction, valve, type
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