| Design
Features |
 |
- Stable, accurate
adjustment of very low flow rates.
- Non-rising stem
design has a threaded valve stem that provides direct
mechanical drive for adjustment of the sliding flat tapered
needle.
- Six easily
interchangeable valve cartridges for maximum flexibility of
flow rate selection.
- Inlet and outlet
connections are 1/8" NPT Female.
|
| Mechanical
and Material Specifications |
Valve
Body |
Valve
Needle |
"O''
Ring
Seals |
Pressure
Max 70ºF |
Operating
Temp. Max |
| Brass |
St St 316 |
Buna-N |
250 psig |
225º F |
| St St 316 |
St St 316 |
Viton
"A''® |
250 psig |
400º F |
| Ordering
Information |
| Complete
Valves |
Valve
Body |
Orifice
Size* |
Straight
Pattern
Valve |
Angle
Pattern
Valve |
Shipping
Weight |
| Brass |
1 |
4171-1505 |
4181-1505 |
1
lb |
| Brass |
2 |
4172-1505 |
4182-1505 |
1
lb |
| Brass |
3 |
4173-1505 |
4183-1505 |
1
lb |
| Brass |
4 |
4174-1505 |
4184-1505 |
1
lb |
| Brass |
5 |
4175-1505 |
4185-1505 |
1
lb |
| Brass |
6 |
4176-1505 |
4186-1505 |
1
lb |
| Stainless
Steel |
1 |
4171-2505 |
4181-2505 |
1
lb |
| Stainless
Steel |
2 |
4172-2505 |
4182-2505 |
1
lb |
| Stainless
Steel |
3 |
4173-2505 |
4183-2505 |
1
lb |
| Stainless
Steel |
4 |
4174-2505 |
4184-2505 |
1
lb |
| Stainless
Steel |
5 |
4175-2505 |
4185-2505 |
1
lb |
| Stainless
Steel |
6 |
4176-2505 |
4186-2505 |
1
lb |
| *
See Flow Capacity Table bellow |
| Replacement
Cartridges — For
conversion of valves in service to a different flow range or
repair of worn unit. |
| Models
(Cartridges Only) |
Orifice
Size*- |
| Brass |
VLV-0121-BA |
1 |
| Brass |
VLV-0122-BA |
2 |
| Brass |
VLV-0123-BA |
3 |
| Brass |
VLV-0124-BA |
4 |
| Brass |
VLV-0125-BA |
5 |
| Brass |
VLV-0126-BA |
6 |
| Stainless
Steel |
VLV-0121-SA |
1 |
| Stainless
Steel |
VLV-0122-SA |
2 |
| Stainless
Steel |
VLV-0123-SA |
3 |
| Stainless
Steel |
VLV-0124-SA |
4 |
| Stainless
Steel |
VLV-0125-SA |
5 |
| Stainless
Steel |
VLV-0126-SA |
6 |
| *
See Flow Capacity Table |
Needle/Orifice
Size |
Helium |
Capacities
(scc/Min.)
Air |
Water |
| 1 |
200 |
100 |
2 |
| 2 |
850 |
400 |
12 |
| 3 |
2800 |
1200 |
54 |
| 4 |
7600 |
3300 |
132 |
| 5 |
24600 |
10000 |
480 |
| 6 |
80000 |
30000 |
1170 |
Values given are the maximum
flows measured with an inlet pressure of 10 psig and exhausted to
atmosphere. Flow capacities will vary for different gases, liquids, and
pressures. Consult us for further information.
Please order Technical
Bulletin TB-172 for additional information.
|
