Figure 86
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Back flow prevention in pump or multi-pump systems • High slam risk systems up to flow deceleration of 25 m/s2 • Combined low line velocity and low pressure tightness • Vacuum breaker for storage tank protection • High capacity/low pressure drop to ensure economical use • Not suitable for pulsating applications
- Manufacturer:
Emerson
- Valve Type:
Valves & Accessories
- Sub-Type:
Keystone Check Valves
- Lightweight, wafer type checkvalve with face-to-face dimensions according ISO 5752, table 5 long
- High flow capacity. A special shaped disc with a large opening angle results in high Kv values
- Spring loaded disc for positive shut off
- Field replaceable O-ring seat
- Internal travel stop prevents the disc from slamming against the pipe
- Excellent low pressure shut-off The standard low pressure shut-off is less than 0.1 bar
- Slam free operation
- Optional heavy spring for slam free operation in systems with high decelerations
- Optional light spring for systems with low line velocities
- Optional adjustable travelstop for system with reduced inner diameter of pipeline
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