What does OS&Y mean on a valve?
outside stem and yoke
QUICK. April 2012. One type of valve commonly used to control water flow to fire sprinkler systems is known as an OS&Y gate valve. OS&Y means “outside stem and yoke” or “outside screw and yoke”. OS&Y gate valves operate by opening and closing via a gate, which lowers into or rises out of the valve.
How much does a 10 OS&Y valve weight?
Weights
| Series 2500/2500-1 | ||
|---|---|---|
| Valve Size | 2″ | 10″ |
| Weight in Pounds | 49 | 313 |
What is a resilient wedge gate valve?
FlowMaster resilient wedge gate valves are designed to control the flow of water in fire hydrant applications, but can also be utilized for other water distribution or sewer system applications. All valves are compliant with the Reduction of Lead in Drinking Water Act of 2011.
How do you know if OS&Y is open?
An OS&Y valve is open when the threaded stem extends from the valve. The valve is closed when the stem is not visible above the control wheel.
How do you grease OS&Y valves?
On OS&Y valves, lubricate the valve stem with food grade anti-seize lubricant. Stems should be wiped clean of any foreign debris prior to operation. 3. On valves with stem seal packing, check regularly for packing leakage and lubricate packing with food grade lubricant.
How much does a 10 gate valve weight?
Valve – Gate, Wedge, ANSI Class 150-2500, CS, Weight (in)
| 150# | 2500# | |
|---|---|---|
| Valve Size (NPS) | Raised Face | Buttweld |
| 8 | 290 | 4430 |
| 10 | 400 | 8380 |
| 12 | 620 | 13220 |
What is alarm check valve assembly?
The alarm check valve is a water flow alarm device designed for vertical installation in the main supply to a wet pipe sprinkler system. When a flow of water from the system equals or exceeds that of a single sprinkler, the valve is to actuate a fire alarm.
What is the difference between AWWA C509 and C515?
Many Engineers question the difference between the AWWA C509 Standard and the AWWA C515 Standard for resilient seated gate valves. The AWWA C509 Standard was developed based on the physical characteristics of cast or gray iron while AWWA C515 was developed based on the more robust characteristics of ductile iron.
What kind of grease for valve stems?
Because it employs a special silicone compound, VSG-77 is the most stable lubricant available on the market today. This grease-like paste is the lubricant of choice for valves of all varieties, including: ball valves, plug valves, butterfly valves, automated valves, gate valves, and also rubber and plastic O-rings.
