Western Branch Diesel Charleston Wv
Residental or Contractor *. Expanding gate valves are not recommended for sandy / abrasive service. 34 (IN GENERAL FOR LARGE SIZE). Outside stem and yoke rising stem gate valve by Arita Fire Solutions, with full encapsulated EPDM coated wedge design to ensure drop-tight sealing and reduction of wear and jamming. If you are installing a new 2"copper main or a main smaller in size, you will be required to install the same size tap connection on the city main. These types of valve are more compact than the OS&Y. Complete Assemblies. What is an OS&Y valve? EPDM disc and O-rings. ANSI Specifications: ANSI 372, ANSI 61, ANSI B16. Size 2 in A-Total Length 3. You can still place orders on or send questions via our contact form.
What is O S & Y Gate valve and how is it different from a normal Gate valve? Lunkenheimer Gate Valves. Features: - UL 262 Listed and FM 1120/1130 Approved and certified to ANSI/NSF 61 & 372. Our office is currently closed. Submittal Sheet & Technical Drawing. Epoxy coated body inside and out per AWWA C-550 (coating NSF and FDA certified). Non rising Stem/Inside Screw: Non rising stem/inside screw design has the chief advantage of requiring minimum headroom for operation. Heavier in comparison with wedge or slab type. With an OS&Y valve it is always clear whether the valve is open or closed. The purpose of these is to hold the packing material of the valve tightly in place so there are no leaks. AWWA C500 Gate Valve is the most robust gate valves on the market. The gate design is always of the through conduit type. Each: 1, - Inner pack: 1, - Case: 1, - Pallet: 3.
When the handle is turned clockwise the gate will close preventing any water from traveling through the valve. Why is an OS&Y valve so important? What is the difference between NRS and OS&Y gate valves? The Shitbox Rally Wrap-Up – Ben and Rob finished! The valve size cannot be either larger or smaller than the service line size. And tell if it is open or closed by the position of the shaft.
Wedge: EPDM Coated Ductile Iron. Technically OS&Y stands for ' O utside Screw and Y oke'. NSF Specifications: NSF 372, NSF 61. Bonnet: Ductile Iron. ASME Specifications: ASME B16. This valve has a bevel on knife edged single piece parallel slide gate valve and is designed to handle slurry, solids which are liable to obstruct a wedge gate. And advantage of rising stem valves is the ability to determine valve position by observing the position of the stem. In other words flushing a toilet or turning on a sink will not let you know if the fire sprinkler system is active. Pressure Class: 300#.
Model: RGA33 Series. This avoids someone accidentally closing the valve and deactivating the fire sprinkler system for the property. This design of gate valve is commonly used for clean fluids and steam applications. Sealing is by differential pressure. 2016-12-30 18:56:02. Gate valves provide straight through unobstructed passage way, which results in minimum pressure loss. NRS means Non-Rising Stem. Rubber encapsulated iron wedge. Valve Stem: Outside. Username or email address *. Slab Gate Valves: * These have a single parallel faced slab gate, which sides over floating seats.
The two gate halves are forced out against the seats at point of closure providing a tight sealing without the assistant of fluid pressure. Pressure seal bonnet: The main feature about the pressure seal. When the stem of the OS&Y is raised out of the body you know the water is on. On NYC water main installations for fire protection all main control valves must be locked in the open position.
An OS&Y valve is the type of valve required by code for NYC water main service lines that provide fire protection. In those situation these valve are used instead. Since the stem does not travel vertically, packing wear is reduced. An OS&Y Valve (outside screw & yoke) functions by opening and closing via a gate, which lowers both in and out of the valve. Because each sprinkler activates independently when the predetermined heat level is reached, the number of sprinklers that operate is limited to only those near the fire, thereby maximizing the available water pressure over the point of fire origin. Certificate of Compliance. Leviton Security & Automation (HAI). Rising Stem/Outside Screw and Yoke: Rising stem/outside screw and yoke construction retains stem threads outside the valve. Rising Stem/Inside Screw: Here the hand wheel and stem both rise, adequate clearance must be provided for operation. Customary stem notch for switch installation and two factory plugged tapping bosses on valve body are some of the on-site application friendly designs. Height: 52-13/20 in. Valve Disc Material: Ductile Iron. Select Size: Search Results View all results. Even on a water main repair of an existing line for fire protection the main control valve should be checked that it is code compliant.