“FLOW-ON” offers  threaded seat 3-way Pneumatic Diaphragm control valve is designed for general service applications up to the limits of the ANSI 150 / 300 pressure class rating. These general service applications include both the mixing and diverting of process fluids found in most process control industries. Our 3-way Pneumatic Diaphragm control valve has several standard options such as temperature extensions, metal bellows seals, and heating jacket. In addition to these options the valves can be specialized to meet the exact process needs such as NACE version for sour gas service and cleaned for specific service (e.g. Oxygen, Chlorine, High Purity, etc.).

This Valve can be assembled with a pneumatic, electric, hydraulic, or electro-hydraulic actuator also offered by the “FLOW-ON” to complete the control valve construction. These control valves are designed according to the modular assembly principle, can be equipped with “FLOW-ON” actuators and valve accessories such as positioners, limit switches, and solenoid valves.

 

Feature & Benefits

 

  • Modular design with fewer parts required as well as commonality of parts for different sizes.
  • Only four parts required to rebuild the valve: seat, plug, body gasket and packing.
  • TA-Luft / EPA Low Emissions self-adjusting PTFE V-ring packing as standard.
  • Bonnet, yoke and body made of the same material.

Actuator

Technical Specifications.

Camber Material

M.S. Die Pressed Sheet Housing

Diaphragm

Nylon Fabric Impregnated Neoprene Rubber

Springs

Spring Steel

Actuator

Multi Springs, Short Height, Spring Return Type

Air Operation

Max 35 PSI

Valve

Technical Specifications.

Size

½” to 8” ( 15 mm to 200 mm)

Rating

ASA 150# & ASA 300#

Body Material

C.I.(IS 210 Gr FG 200) / ASTM A216 Gr WCB / ASTM A 351 Gr CF8/CF8M

Type

2 way, 3 way

Yoke

Cast Iron

Bonnet

Standard Carbon Steel Fabricated. Extension Column & Radiation Fins for 3 way Valves

End Connections

Flanged according to ASA 150# & ASA 300#

Seat

S.S.304/316 Screw in Type

Plug

S.S.304/316/410 ‘V’ Port Characteristics/Teflon Filled

Shaft

SS.304/316 screwed in the Actuator Stem

Sealing Type

Metal-to-Metal Seal/Soft Seal

Packing Box

Preformed Rings in Graphoil Packings/Teflon Rings Combinations of Both

Valve

Normally closed. Normally open on request

Working Pressure

max 20Kg/cm²

Maximum Temperature

180°C for 2 way & 400°C for 3 way Valves

Testing & Inspection

Standard

Body Hydraulic Test Pressure

20Kg/cm2 for Class 150 & 25 Kg/cm² for Class 300.

Valve Mounting

Horizontal.

Working Media

Steam, Thermic Oil, Water, Chemicals

 

Dimensions

Size

F

A

A1

H

H1

D

I

K

R

R1

N

O

1″

185

90

145

345

345

108

11

79

51

1. 6

4

16

1 ½”

207

90

153

350

350

127

14

98

73

1. 6

4

16

2″

238

100

170

390

390

152

16

120

92

1. 6

4

19

2 ½”″

300

128

195

530

530

178

18

140

105

1. 6

4

19

3″

305

128

200

550

550

190

19

152

127

1. 6

4

19

4″

360

165

250

590

590

229

24

190

157

1. 6

8

19

5″

365

190

285

685

685

254

24

16

186

1. 6

8

22

6″

440

205

305

720

720

279

25

241

216

1. 6

8

22

8″

530

230

335

800

800

343

29

298

270

1. 6

8

22

APPLICATION :
1) Refining Industry.

2) Industrial Gases.

3) Pharmaceutical & Biotechnology.

4) Iron & Steel Industry.

5) Chemical & Petrochemical.

6) Food & Beverages.

7) Water & Waste water etc.

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