Midland Industries
Midland No-Tap NY & Chicago Flanged OS&Y AWWA Gate Valve
- Availability:
- Allow 2-3 Days to Ship
- Weight:
- 0.00 LBS
Description
Midland No-Tap NY & Chicago Flanged OS&Y Gate Valve
Midland No-Tap NY & Chicago Flanged OS&Y Gate Valves are resilient seated gate valves designed for dependable shutoff service in compatible water distribution and fire-protection piping systems.
These valves feature a ductile iron body, flanged x flanged end connections, stainless steel rising stem, graphite stem packing, and handwheel operation. The outside screw and yoke design provides clear visual indication of valve position, while the resilient wedge supports reliable shutoff performance. Available in 2-1/2", 3", 4", 6", and 8" nominal sizes, the series carries a 300 PSI pressure rating.
Product Highlights
- Midland no-tap NY & Chicago flanged OS&Y gate valve
- Resilient seated gate valve design
- Outside screw and yoke configuration
- Flanged x flanged end connections
- Ductile iron body construction
- Ductile iron handwheel
- Stainless steel rising stem
- Graphite stem packing
- 300 PSI pressure rating
- Provides visible indication of valve position
- Supplied without a supervisory tap
- Available in 2-1/2", 3", 4", 6", and 8" nominal sizes
Technical Specifications
| Product Type | Resilient Seated OS&Y Gate Valve |
|---|---|
| Brand | Midland |
| Configuration | No-Tap NY & Chicago |
| Body Material | Ductile Iron |
| Stem Material | Stainless Steel |
| Stem Design | Rising Stem / OS&Y |
| Stem Packing | Graphite |
| Closure Type | Resilient Seated Wedge |
| Connection Type | Flanged x Flanged |
| Operator | Handwheel |
| Handwheel Material | Ductile Iron |
| Pressure Rating | 300 PSI |
| Available Sizes | 2-1/2", 3", 4", 6", and 8" |
| Supervisory Tap | Not Included |
| Typical Service | Water Distribution and Fire-Protection Piping Systems |
Valve Configuration
Flanged Inlet
The inlet flange provides a secure bolted connection to a compatible mating flange in the piping system.
OS&Y Valve Body
The resilient seated gate valve uses an outside screw and yoke arrangement with a rising stem to provide visible indication of valve position.
Flanged Outlet
The outlet flange connects to the downstream piping system using the appropriate gasket and bolting arrangement.
Construction Details
The Midland no-tap NY & Chicago OS&Y gate valve uses a durable ductile iron body designed for strength and long service life in compatible water and fire-protection systems.
A resilient seated wedge provides dependable shutoff, while the stainless steel rising stem provides corrosion resistance and clear visual indication of whether the valve is open or closed.
Graphite stem packing helps maintain a reliable seal around the stem during repeated operation, while the handwheel provides controlled multi-turn opening and closing.
Why Choose an OS&Y Gate Valve?
Visible Valve Position
- Rising stem provides visual position indication
- Stem extends as valve opens
- Easy to identify open or closed condition
- Useful for inspection and system monitoring
- Common configuration in fire-protection systems
Dependable Isolation
- Resilient seated wedge
- Multi-turn handwheel operation
- Ductile iron construction
- 300 PSI pressure rating
- Designed for on/off shutoff service
OS&Y Operation
Open Position
As the handwheel is operated to open the valve, the stainless steel stem rises above the yoke, providing a visible indication that the gate is moving toward the open position.
Closed Position
As the valve closes, the stem lowers toward the valve body as the resilient wedge moves into the shutoff position.
No-Tap Configuration
No Supervisory Tap
This product series is supplied without a supervisory tap as identified in the supplied product information.
Application Verification
Confirm whether the project requires a tapped or no-tap valve configuration before ordering, especially in fire-protection installations.
Typical Applications
Fire-Protection Systems
- Fire sprinkler supply piping
- Fire water mains
- Building fire service lines
- Valve rooms
- System isolation points
Water Distribution Systems
- Commercial water piping
- Municipal water systems
- Mechanical room piping
- Utility water service
- Compatible industrial water systems
OS&Y vs. Non-Rising Stem Gate Valve
OS&Y / Rising Stem
An OS&Y valve uses a stem that rises as the valve opens, providing clear visual indication of gate position but requiring additional vertical clearance.
Non-Rising Stem
A non-rising stem remains within the valve assembly during operation, providing a more compact installation but without the same external visual position indication.
Our valve, fitting, and industrial product specialists can help review your valve size, FIP connection requirements, pressure rating, handle configuration, media compatibility, and application before you order.
Email the GetPipe.com Team Visit Quick SupportFrequently Asked Questions
What does OS&Y mean?
OS&Y means Outside Screw and Yoke. The valve stem rises as the valve opens, providing a visible indication of valve position.
What does no-tap mean?
The supplied product information states that this valve series is supplied without a supervisory tap.
What sizes are available?
The supplied product information lists 2-1/2", 3", 4", 6", and 8" nominal sizes.
What is the pressure rating?
The supplied product information lists a 300 PSI pressure rating.
What material is the valve body made from?
The supplied product information identifies ductile iron body construction.
What material is the stem?
The supplied product information identifies a stainless steel stem.
What type of stem packing is used?
The supplied product information identifies graphite stem packing.
How is the valve operated?
The valve uses a handwheel and multi-turn operation to raise or lower the resilient seated wedge.
Can the valve position be identified visually?
Yes. The rising stem allows the valve position to be identified visually from the stem position.
Is this gate valve intended for throttling?
Gate valves are generally intended for fully open or fully closed isolation service rather than routine throttling.
What should I verify before ordering?
Confirm nominal valve size, no-tap configuration, flange dimensions, pressure rating, available vertical clearance, and system requirements before ordering.
Important Ordering & Installation Notes
- This listing is for a Midland No-Tap NY & Chicago Flanged OS&Y Gate Valve.
- This series is supplied without a supervisory tap.
- Available sizes are 2-1/2", 3", 4", 6", and 8".
- The supplied product information lists a 300 PSI pressure rating.
- Confirm the required nominal valve size before ordering.
- Verify flange dimensions, drilling, bolt pattern, and mating flange compatibility.
- Provide adequate vertical clearance for the rising stem throughout the full operating range.
- Use appropriate flange gaskets and bolting for the installation.
- Ensure mating flanges and piping are properly aligned before tightening hardware.
- Do not use flange bolts to pull misaligned piping into position.
- Gate valves should generally be operated fully open or fully closed rather than used for routine throttling.
- Confirm whether project or fire-protection requirements call for a supervisory tap before selecting this no-tap configuration.
- Verify system pressure, media compatibility, and installation requirements before placing the valve into service.
- Install and maintain according to applicable piping codes, project requirements, and manufacturer instructions.
