what is the difference between Grooved End Resilient Wedge OS &Y Gate valve 300PSI and Grooved End Resilient Wedge OS &Y Gate valve 200PSI ?How do they work in a fire protection system?
The difference between a grooved end resilient wedge OS&Y gate valve rated for 300 PSI and a gate valve rated for 200 PSI is the pressure rating. The pressure rating indicates the maximum pressure that the valve is designed to withstand and operate safely. Here is a detailed explanation of these differences and their role in fire protection systems:
1.Pressure Level:
Grooved End Flexible Wedge OS&Y Gate Valve 300 PSI: This valve is designed to handle a maximum pressure of 300 pounds per square inch (PSI).
Grooved End Flexible Wedge OS&Y Gate Valve 200 PSI: This valve is designed to handle pressures up to 200 PSI.
2.Application in fire protection systems:
300 PSI Valves: Typically, valves with a higher pressure rating (300 PSI) may be used where a fire protection system requires a higher pressure rating. It can be used in larger systems or where design specifications require higher pressure thresholds.
200 PSI Valves: Valves with a 200 PSI rating may be suitable for smaller fire protection systems or applications with lower pressure requirements. The pressure rating of the valve must be matched to the specifications of the fire protection system to ensure safety and compliance.
3.Security and Compliance:
It is critical to select a valve with a pressure rating that meets the design and safety requirements of the fire protection system. Using a valve with a lower pressure rating than required may result in a safety hazard, while using a valve with a higher pressure rating may not be necessary and may be more expensive.
In fire protection systems, these types of gate valves are often used to control water flow. They may be strategically placed to isolate parts of a system or regulate water supply during a fire emergency. The grooved ends allow for quick and easy installation using grooved couplings, which is useful in time-sensitive situations such as firefighting.
When selecting valves for a fire protection system, factors such as pressure requirements, system size, and compliance with relevant standards and codes must be considered to ensure the overall effectiveness and safety of the system
| Dimensions |
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| Size |
DN |
L |
F |
D |
E |
G |
H |
| 2 1/2" |
65 |
190 |
15.9 |
73 |
69.1 |
7.9 |
370 |
| 76.1 |
72.3 |
| 3" |
80 |
203 |
15.9 |
88.9 |
84.9 |
7.9 |
420 |
| 4" |
100 |
229 |
15.9 |
114.3 |
110.1 |
9.5 |
447 |
| 5" |
125 |
254 |
15.9 |
139.7 |
135.5 |
9.5 |
547 |
| 141.3 |
137 |
| 6" |
150 |
267 |
15.9 |
165.1 |
160.8 |
9.5 |
607 |
| 168.3 |
163.9 |
| 8'' |
200 |
292 |
19 |
216.3 |
211.6 |
11.1 |
754 |
| 219.1 |
214.3 |
| 10" |
250 |
330 |
19 |
273 |
268.3 |
12.7 |
890 |
| 12" |
300 |
356 |
19 |
323.9 |
318.3 |
12.7 |
1031 |
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| MATERIAL SPECIFICATION |
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| NO. |
Name |
Material |
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| 1 |
Gasket |
Stainless Steel 304 or C95400 |
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| 2 |
Bonnet |
Ductile Iron |
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| 3 |
Packing |
Graphite |
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| 4 |
Disc |
Ductile Iron +EPDM |
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| 5 |
Body |
Ductile Iron |
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| 6 |
Sealing Ring |
EPDM |
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| 7 |
Bolt |
Stainless Steel 304 or Steel 1045 |
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| 8 |
Gland |
Ductile Iron |
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| 9 |
Nut |
Stainless Steel 304 or Steel 1045 |
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| 10 |
Flat Washer |
Stainless Steel 304 or Steel 1045 |
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| 11 |
Bolt |
Stainless Steel 304 or Steel 1045 |
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| 12 |
Handwheel |
Ductile Iron |
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| 13 |
Lock Nut |
C95400 |
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| 14 |
Locating Screw |
Stainless Steel 304 or Steel 1045 |
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| 15 |
Stem |
Stainless Steel 304 or C95400 |
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| 16 |
Stem Nut |
C95400 |
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| 17 |
Plug |
C95400 |
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| 18 |
Lifting Nut |
CF8/CF8M or C95400 |
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| 19 |
Pin |
Stainless Steel 304 |
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| 20 |
Sealing Ring |
EPDM |
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