Various Valves

Mud Valve


Product Name:
Mud Val


Product Model No.SD44X-10

Specifications (size)DN80-300

                                        SD44X Manual fast open mud valve

1. Product characteristics and applications

The product is mainly installed on the outside of all kinds of pools using for eliminating mud and sewerage at the bottom of pool.

2. Working principle

The valve mainly consists of valve body, valve flap, valve cap, gear case, gear rack handle, threshold and so on. During operation, only if press handle down to position may the valve start. On the opposite direction, may stop fast.

3. Main technology parameters

Nominal pressure

(Mpa)

Test pressure PN(Mpa)

Applicable temperature

Applicable media

Shell test

Seal test

1.0

1.5

1.1

Normal temperature

Water, sewerage, mud

 

4. Main part material

 

Nominal diameter

Material of valve body, valve cap and   gear

Valve flap material

Valve stemp

Material

WCB/HT200

A3-NBR

0Cr18N19

 

5. Maintenance and installation points for attention

1.       The valve must be kept in drying and ventilation room. Prohibit stacking. In order to prevent rubber from aging and to affect working lifetime, applicable temperature should be kept in the limit of 0-35,and relative humidity should be remained in the range of 50-80%.

2.       Should avoid contacting liquid fuel, oil and other flammable materials.

3.       For the valves in stock, two ends of the path must be sealed in order to avoid foreign matter entering interloculum so as to impair related sealing element.

4.       Before install the valve, should check carefully if the operating condition of the pipeline conforms to the regulated applicable scope of the valve. Prevent unnecessary impairment from happening because of improper selection.

5.       During operating, must not rely on lengthening lever in order to avoid impairing driven parts such sealing surface, gear case and so on because of excessive torque.

6.       During intallation, should clean interloculum of the valve avoidng dirt clogging or impairing sealing element. As well should check periodically according to practical condition.

7.       During operating, must check the sealing position contacting media as well as other easily-worn parts frequently and check periodically according to actual usage.

8.       If the valve is used for discontinuous operation pipelines, clean the position contacting media when stops running in order to prolong working lifetime of the valve.

9.       For the repaired valves, should do sealing property test with no exception. After the test is past, install, use, as well make a report for reference.

6. Fault and elimination methods

 

Fault

Reason

Elimination methods

1. Valve stem on-off not flexible

Clogging between gear case and valve stem

Process the burr problem on valve stem.

Existing foreign matter between gear case   and valve stem

Eliminate foreign matter.

2. Leakage between sealing surfaces

Gear handle not closing to expected   position

Adjust the shift to close geae handle to   expected position.

Sealing surface of valve flap impairing

Replace valve flap.

Sealing surface of valve body impairing

Replace valve body.

 

7. Main profile dimension and connection dimension

Nominal diameter

DN(mm)

Main dimension(mm)

H

L1

L2

D

D1

Z-d

80

450

135

125

195

160

4-18

100

490

145

125

215

180

8-18

200

760

225

185

335

295

8-23

250

825

260

205

390

350

12-23

300

950

280

245

440

400

12-23