Control valves

Control valves

Technical details

Leakage

Flow characteristic

Flow direction

PF6_G-NC

PF6_G-NO

PF6_G-BD

TFM 1600 soft seal

Fast opening

Flow over seat

Flow under seat

Flow over seat

Flow under seat

ASME Class VI

On/off

Port 1 to 2

Port 2 to 1

Port 1 to 2

Port 2 to 1

60 °C maximum

Maximum pilot pressure

10barg

10barg

8barg

For conversion:

C

v

(UK) = K

v

x 0.963

C

v

(US) = K

v

x 1.156

Pilot media Instrument air or inert gases - For use with other flow media contact Spirax Sarco

Actuator rotation

Actuator type and size

Kvs values

Size

K

vs

360°

Pilot connection

" BSP

1⁄4" BSP

1⁄4"BSP

DN15

1⁄2"

3⁄4"

1"

11⁄4"

11⁄2"

2"

Type 1 = 45 mm diameter

Type 2 = 63 mm diameter

Type 3 = 90 mm diameter

DN20

DN25

DN32

DN40

DN50

4.5

8.0

15.6

24.6

42.0

NO (Normally Open)

8

57.0

NC (Normally Closed)

8

10

9

10

9

2

2

6

5

5

11and12

3

3

4

6

11 and 12

4

1

BD (Bi-Directional normally closed)

1

Materials

No. Part

1 Body

2 Bonnet

3 Plug

4 Valve plug seal

5 Valve stem

Material

8

10

9

2

5

3

Stainless steel

Stainless steel

Stainless steel

Modified PTFE G500

Stainless steel

AISI 316L

AISI 316L

AISI 316L

AISI 316L

Stem Standard

PTFE + 25% carbon graphite filled PTFE

+ FKM chevron

25% carbon graphite filled PTFE + FKM chevron

FKM

30% glass filled polyamide (for H version PA66)

50% glass filled polyamide

NBR

PTFE

FKM

6

seals

Option H

6

11 and 12

7* Stem 'O' ring

8 Actuator housing

9 Piston

10 Piston lip seal

11 Gasket

12 'O' ring

4

1

* Note: Item 7 is not shown.

TI-P373-13 CH Issue 10

Page 3 of 8

PF6 Stainless Steel Piston Actuated On/Off Valves

4.1.106