FEATURES
- Stainless steel piston
- Dependable control of reduced pressure
- Renewable stainless steel seat
- Sealed spring cage, recommended for concealed and multistory installations is standard
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SPECIFICATIONS
As noted a galvanized cast iron pressure reducing valve with a semi-balanced stainless steel piston and nylon reinforced diaphragm shall be installed to reduce static set pressure to 50 psi. Valve shall feature a renewable stainless steel seat and feature a sealed spring cage. Valve shall be tapped and plugged ¾" on both inlet and outlet sides for bypass valving. Valve shall be protected by a strainer. Main valve shall be a 3" Watts Regulator model N223FS and the bypass valve shall be a ¾" Watts Regulator model 223 set at 60 psi.
MATERIALS
- Iron bodies that are coated with special corrosion-preventative type of cold galvanizing.
- Seat - Renewable stainless steel
- Piston - Stainless steel
CAPACITY
PRESSURE-TEMPERATURE
Max. Temperature: 160°F (71°C).
Initial Pressure - Up to 175 psi (12 bars)
Reduced Pressure Range - Adjustable from 25 to 75 psi (172 to 516 kPa), set for 50 psi (344 kPa) no flow unless otherwise specified.
DIMENSIONS-WEIGHT
| Model No. |
Size(DN) |
Dimensions |
Weight |
| A |
AS |
C |
D |
L |
M |
N |
| in. |
mm |
in. |
mm |
in. |
mm |
in. |
mm |
in. |
mm |
in. |
mm |
in. |
mm |
in. |
mm |
lbs. |
kg. |
| N223F |
3 |
80 |
12 ½ |
318 |
-- |
-- |
14 ½ |
368 |
3 ¾ |
95 |
7 ½ |
191 |
-- |
-- |
-- |
-- |
86 |
39 |
| N223FS |
3 |
80 |
12 ½ |
318 |
22 5/8 |
575 |
14 ½ |
368 |
3 ¾ |
95 |
7 ½ |
191 |
10 1/8 |
257 |
-- |
-- |
120 |
54 |
| Strainer 77F |
3 |
80 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
10 1/8 |
257 |
7 |
178 |
34 |
15 |