Service Metal
125# Cast Iron Flanged OS&Y Gate Valve
- SKU:
- SM125GVO
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
125# Cast Iron Flanged OS&Y Gate Valve
125# Cast Iron Flanged OS&Y Gate Valves are designed for reliable on/off flow control in compatible flanged piping systems where a rising stem and visible valve position are preferred.
Built with a durable cast iron body, bolted bonnet, rising stem, and solid wedge design, these valves provide dependable isolation service in commercial, industrial, mechanical, and utility piping applications. The valve is rated for 200 WOG and 125 SWP service.
Product Highlights
- 125# cast iron flanged OS&Y gate valve
- Cast iron body
- Rising stem design
- Bolted bonnet construction
- Solid wedge gate
- Flanged end connections
- Designed for on/off isolation service
- Visible stem position helps indicate valve position
- 200 WOG rating
- 125 SWP rating
- Spec sheets available by size range
- Pipe sizing reference chart available
Technical Specifications
| Product Type | OS&Y Gate Valve |
|---|---|
| Pressure Class | 125# |
| Body Material | Cast Iron |
| Connection Type | Flanged x Flanged |
| Stem Type | Rising Stem |
| Bonnet Type | Bolted Bonnet |
| Gate Design | Solid Wedge |
| Primary Function | On/Off Flow Isolation |
| WOG Rating | 200 WOG |
| SWP Rating | 125 SWP |
| Available Documentation | Size-Specific Spec Sheets and Pipe Chart |
OS&Y Gate Valve Design
Rising Stem
The stem rises as the valve opens, providing a visible indication of valve position.
Solid Wedge
The solid wedge gate moves vertically through the valve body to open or stop flow through the piping system.
Bolted Bonnet
The bolted bonnet design provides a serviceable upper body assembly for compatible maintenance procedures.
Construction Details
This Class 125 gate valve uses a cast iron body with flanged end connections for integration into compatible piping systems.
The OS&Y configuration uses a rising stem so the stem position changes visibly as the valve is opened or closed. A solid wedge provides shutoff, while the bolted bonnet construction supports a robust valve body assembly.
Why Choose an OS&Y Gate Valve?
Visible Valve Position
- Rising stem provides visual position indication
- Useful where operators need to confirm open or closed status
- Designed primarily for isolation service
- Flanged installation for compatible piping systems
- Available across multiple pipe sizes
Cast Iron Construction
- Durable cast iron body
- Bolted bonnet design
- Solid wedge gate
- 200 WOG rating
- 125 SWP rating
Typical Applications
Commercial & Mechanical Systems
- Building mechanical piping
- Utility piping
- Water distribution systems
- Equipment isolation
- General service piping
Industrial & Plant Systems
- Industrial water systems
- Process utility piping
- Plant service lines
- Maintenance isolation points
- Compatible flanged piping systems
Pressure Ratings
200 WOG
The supplied product information lists the valve with a 200 WOG rating.
125 SWP
The supplied product information lists the valve with a 125 SWP rating.
Ask Willy: Need Pipe Size Help?
Use our pipe size chart to confirm sizing before ordering. Valve specification sheets are separated by size range so you can review the dimensions and details for the exact valve size you need.
Product Documentation
2"-8" Spec Sheet
Review dimensional and product-specific information for valve sizes from 2" through 8".
10"-12" Spec Sheet
Review dimensional and product-specific information for valve sizes from 10" through 12".
14"-24" Spec Sheet
Review dimensional and product-specific information for valve sizes from 14" through 24".
Pipe Size Chart
Use the common pipe diameters and wall thickness chart to help confirm compatible pipe sizing before ordering.
Frequently Asked Questions
What does OS&Y mean?
OS&Y refers to an Outside Screw and Yoke style valve with a rising stem that provides visible indication of valve position.
What is the body material?
The supplied product information lists a cast iron body.
Does this valve have a rising stem?
Yes. This valve uses a rising stem design.
What type of bonnet does this valve use?
The supplied product information specifies a bolted bonnet.
What type of gate does this valve use?
The valve uses a solid wedge design.
What are the pressure ratings?
The supplied product information lists 200 WOG and 125 SWP ratings.
What type of connections does the valve use?
This listing is for a flanged gate valve intended for compatible flanged piping systems.
Is this valve intended for throttling?
Gate valves are generally selected for full-open or full-closed isolation service rather than routine flow throttling.
Are different spec sheets available for different sizes?
Yes. Separate specification sheets are provided for 2"-8", 10"-12", and 14"-24" valve sizes.
What should I verify before ordering?
Confirm valve size, flange compatibility, pressure requirements, service media, operating temperature, and the appropriate specification sheet for the selected size.
Important Ordering & Installation Notes
- This listing is for a 125# cast iron flanged OS&Y gate valve.
- Confirm the required nominal valve size before ordering.
- Review the correct specification sheet for the selected size range.
- Confirm flange diameter, bolt pattern, facing, and mating-flange compatibility.
- Valve construction includes a cast iron body, rising stem, bolted bonnet, and solid wedge.
- The supplied ratings are 200 WOG and 125 SWP.
- Confirm that the valve pressure rating is suitable for the intended service conditions.
- Use appropriate flange gaskets, bolts, nuts, and tightening procedures.
- Provide adequate clearance above the valve for full rising-stem travel.
- Confirm sufficient operating clearance for the handwheel and stem.
- Gate valves are generally intended for isolation rather than routine throttling service.
- Confirm applicable pressure, temperature, media, material, and project requirements before installation.
