Valve Catalogue » Pressure Relief Valves » Fig. 116 MF Series Pressure Relief Valve

Technical Information Fig No. 116 'MF' Series

 

 

 

      

Specifications:

Flanges:     As 2129 Tables E & F
Working Pressure:  Table E 1400 kPa
Table F 2100 kPa
Adjustable Ranges:  0-115, 70-230, 200-700, 600-1100, 700-1500 kPa
Temperature Range:  Water 5 - 60°C

 

The Type ‘MF’ Reducing Valve is hydraulically operated, single seated, piston actuated, diaphragm pilot controlled and spring regulated.

Automatically reduces higher and fluctuating inlet pressure to constant outlet pressures regardless of the flow demands.

The diaphragm pilot control closes when outlet setting is attained, diverting inlet pressure to the piston which closes the main valve at the rate determined by the flow restrictor. The "V-Ported" valve guide eliminates closing ‘slam.’ Under operating conditions the main valve establishes a throttling position as determined by the pilot control.

Dimensions:

Valve Size

80

100

150

200

250

300

400

450

500

610

750

‘A’

295

355

445

610

760

915

1220

1370

1525

1675

2030

‘B’

95

140

165

205

230

330

400

430

500

510

610

‘C’

360

510

560

690

720

760

1000

900

850

1020

1140

‘D’

150

165

200

300

300

400

500

560

600

660

770

‘E’

150

150

200

300

300

300

360

400

450

490

620

Mass/kg

42

65

120

250

450

700

1350

1700

2100

2700

5000

 

Materials:

Body and Cover:  Cast Iron AS 1830/T250
Valve Carrier: 150-300mm Bronze AS 1565/836B
400-750mm Cast Iron AS 1830/T250
Internal Parts:    Bronze AS 1565/836B
Grade 316 Stainless Steel
Valve Disc and Seals:  Polyurethane Neoprene
Pilot Valve: Bronze AS 1565/836B
Grade 316 Stainless Steel
Coatings:  Epoxy Paint
Int. & Ext. (0.5mm min. D.F.T.)