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SẢN PHẨM
	
		
			
			
			SAFETY VALVES ASME I, ASME III AND ASME VIII		
		
		Regular flow safety valves
Safety valves for pressure relief in accordance to PED and DIN/EN.
The modern pressure safety valve for regular capacities.
- Cost-effective body design with seat bushing developed with the modular principle with other series.
 - Smooth and stable behaviour thanks to comparatively low lift.
 - Inner parts made of stainless steel (except spring and spring washer).
 
Product Specifications
Inlet sizes
Inlet pressure rating
- PN 10 to PN 40
 
Set pressures
- 0.1 bar”g to 40 bar”g
 
Temperature range
- -270°C to +450°C
 
Overpressure
- Vapours / gases: 5%
 - Liquids: 10%
 
Blowdown
- Vapours / gases: 10%
 - Liquids: 20%
 
Allowable built-up back pressure without bellows
- 20% of the set pressure
 
| MODEL | Yes 9 | 
| DESIGN | Conventional with open bonnet | 
| DIMENSIONS | 1 1/2 "to 12" | 
| TARE PRESSURE | From 3 barg to 330 barg | 
| RATING | From 150x150 to 2500x600 | 
| TEMPERATURE RANGE | Up to 650ºC | 
| OVERPRESSURE | 
3% | 
| CLOSING PRESSURE | 
From 4% to 7% * | 
| STANDARD MATERIALS | SA-216 WCB (up to 427ºC) SA-217 WC9 (up to 590ºC) SA-217 C12A (up to 650ºC)  | 
Typical applications for the Si 9 safety valve series  :
- Steam boilers
 - Reheaters
 - Power generation plants
 - Industrial steam generation
 - Steam systems and processes
 
* According to ASME Sec. I, under ideal operating conditions (pure steam, new valves, constant working conditions, 0 vibrations, etc.) the closing pressure or blow down should be 4%. In real operating conditions however, the closing pressure value can reach 7%
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