Table of Contents Table of Contents
Previous Page  118 / 235 Next Page
Information
Show Menu
Previous Page 118 / 235 Next Page
Page Background

Valves

2

© Copyright 2001-2013. All Rights Reserved.

Operation

Factory Test

Panel mounting

Choice of StemTip

• Pressure rating up to 5,000psig (345bar) @100°F (38°C)

• Temperature rating up to 450°F (232°C) with standard PTFE packing; up to 600°F (315°C) with optional PEEK packing

• Panel mounting without packing disruption

• Standard SS316 and Brass material valve construction

• DK-Lok Gap gauge allows easy inspection for sufficient tube pull-up before a system is pressurized

• Valves for Sour Gas Service meeting the requirements of NACE MR0175 are available

Every valve is tested with the nitrogen @1,000psig (68bar) for leakage at the seat to a maximum allowable leak rate of 0.1 SCCM.

The packing is tested for no detectable leakage.

How to mount the valve on panel.

l

l

Panel hole drill and thickness mm (

in

)

Valve

Series

Panel

Hole Drill

Panel Thickness

Min.

Max.

V15A 13.5 (

0.53

)

3.17

(

0.125

)

6.35

(

0.25

)

V15B 13.5 (

0.53

)

V15C 20.0 (

0.79

)

V15D 26.2 (

1.03

)

Disassembly

1.Un

-tighten the handle set screwusing an allen key and remove the handle.

• Handle Set Screw Allen Key

Valve Series

Allen Key

Round Handle

Bar Handle

V15A & V15B

Hex.2.5mm

Hex. 4.0mm

V15C

Hex.3.0mm

V15D

Hex. 5.0mm

2.Remove the packing nut & panel nut and set aside for later use.

3.Place the valve bonnet in the panel hole.

Reassembly

4. Tighten the panel nut onto the valve bonnet.

Keep the panel nut always on the external portion of the panel.

5. Finger tighten the packing nut onto the valve body.

6. Place the round handle on the stem. Align the set screw with the

groove on the side of the stem. Tighten the set screw.

7. Fully close the valve and retract the stem two or three turns before

torque the packing nut to the torque below.

• Packing Nut Torque Table

Valve Series

Torque

lbf · ft

kgf · cm

V15A, V15B

5.2

71.9

V15C

10.6

146.6

V15D

25.1

347

Vee Stem

Regulating Stem

Non-Rotating Soft Seat

Metal to metal Vee stem for pressure tightness

at elevated temperature.

Regulating stem for flow rate control

Non-rotating PCTFE soft seat for repetitive shut-off on gas.

• Round Handle is recommended for soft seat valve.

Note

: Soft seat packing adjustment may be required during service to compensate the physical compression of soft seat after repeated shut-off.

l

l

l

l

l

l

V15 Series

NeedleVales