| 2. 223
Type Pressure Reducing Valve( for water ) |
| Description: |
| |
The
223 type is a direct pressure reducing valve suitable for water.
The 223 type can be used for the pressure regulation on the feed
water from an elevated water tank of middle or high building
to each floor or pressure regulation of feed water connected
directly with a pump without the elevated water tank system, etc.
in construction facilities. |
|
|
 |
| |
| Limiting Conditions : |
| body design conditions
|
PN 16 |
 |
| Maximum upstream conditions |
15 kgf/cm2 |
|
| Maximum cold hydraulic test |
30 kgf/cm2 |
|
| Adjustable downstream pressure |
2 - 7 kgf/cm2 |
|
| Maximum design temperature |
60°C |
|
| Minimum design temperature |
5°C |
| |
|
| Dimensions (mm): |
 |
| Size |
L |
G |
H |
Weight (kg) |
|
| DN 40 |
205 |
75 |
235 |
14.5 |
|
| DN 50 |
205 |
83 |
240 |
15.2 |
|
| DN 80 |
325 |
100 |
328 |
29.5 |
|
| |
| Size and Pipe connections: |
| |
DN 40, DN 50, DN 80 flanged PN16 ( DIN 2502). |
| Capacities ( Cv Values
) : |
| Size |
DN40 |
DN50 |
DN80 |
|
| Cv |
8 |
12 |
31 |
|
| |
| Note : Cv = 1.167
Kvs |
| Materials : |
| No. |
Part |
Material |
| 1 |
Adjusting bolt |
C.S. Galva |
| 2 |
Adjusting nut |
C.S. Galva |
| 3 |
Bonnet |
G.G. 25 |
| 4 |
Spring Washer Up |
Gray Cast |
| 5 |
Spring |
C.S.Cadmium plated |
| 6 |
Bolt |
C.S. Galva |
| 7 |
Spring Gasket |
C.S. Galva |
| 8 |
Split Pin |
C.S. |
| 9 |
Nut |
C.S. Galva |
| 10 |
Spring Gasket |
C.S. Galva |
| 11 |
Spring Washer Down |
Gray cast iron |
| 12 |
Diaphragm |
Nylon insert |
| 13 |
Gasket |
S.S.304 or 316 |
| 14 |
Nut |
Brass |
| 15 |
Gland |
Brass |
| 16 |
Packing |
Graphite or Teflon |
| 17 |
Spindle |
Brass or S.S.316 |
| 18 |
Seat |
S.S.430 |
| 19 |
Gland-2 |
Brass |
| 20 |
Disc |
Rubber |
| 21 |
Cap Disc |
Brass |
| 22 |
Body |
G.G. 25 |
| 23 |
Cap down |
Gray Cast Iron |
| 24 |
Spring Gasket |
C.S. Galva |
| 25 |
Bolt |
C.S. Galva |
| 26 |
Pin |
S.S. |
| 27 |
Name Plate |
Aluminum |
| 28 |
Pin |
Aluminum |
|
 |
| |
| Installation: |
| |
The valve should be installed in
a horizontal pipeline with the direction of flow as indicated by
the arrow on the valve body. |
| Flow Characteristic Curve: |
| |
 |
| |
| Pressure characteristic Curve: |
 |
| |
The above chart show the change of secondary pressure
when primary pressure was changed to 3.0 , 11 and 3.0 kgf/cm2g
at primary pressure being 3.0 kgf/cm2g
secondary pressure being se at 2.0 kgf/cm2g.. |
| |
| How to Order: |
| |
Example: DN40 223 type pressure
reducing valve. |
| |
Design and specifications are subject to change without notice. |
|
