421 Iron OS&Y Gate Valve
Engineered for demanding industrial environments, the 421 Iron OS&Y Gate Valve delivers reliable on/off flow control with its rugged cast iron construction and bronze-mounted trim (IBBM). Ideal for water, oil, and gas applications, this valve combines durability with easy maintenance, thanks to its Outside Screw & Yoke (OS&Y) design, which provides a clear visual indicator of valve status.
Key Features:
- OS&Y (Outside Screw & Yoke) Design: Rising stem mechanism ensures easy operation and instant visual confirmation of open/closed positions.
- Heavy-Duty Build: Cast iron body paired with bronze-mounted components (IBBM) for superior corrosion resistance and longevity.
- High-Pressure Resilience: Rated for 125# WSP (Water Service Pressure) and 200# WOG (Water, Oil, Gas), ensuring versatility across media.
- Solid Disc Construction: Delivers a leak-tight seal for reliable shutoff in high-stress systems.
- Flanged Ends: Compliant with ANSI B16.10 standards for seamless integration into industrial piping networks.
- Extended Temperature Range: Operates reliably from 14°F to 390°F (-10°C to 199°C), suitable for both cold and high-heat environments.
- Certified Quality: Meets MSS-SP-70 standards for material integrity and performance.
Technical Specifications:
- Body Material: Cast Iron
- Trim Material: Bronze (IBBM – Iron Body, Bronze Mounted)
- Pressure Class: 125# WSP / 200# WOG
- Temperature Range: -10°C to 199°C (14°F to 390°F)
- End Connection: Flanged (ANSI B16.10)
- Design Standard: MSS-SP-70
- Stem Type: Rising Stem (OS&Y)
Ideal Applications:
- Industrial water supply and distribution
- Oil and gas pipelines
- High-temperature steam systems
- Fire protection and HVAC infrastructure
- Chemical processing plants
Why Choose This Valve?
The 421 Iron OS&Y Gate Valve is built to withstand extreme pressures and temperatures while offering easy maintenance and operational clarity. Its OS&Y design eliminates guesswork with a visible stem position, and the IBBM construction ensures corrosion resistance in aggressive environments. Perfect for engineers and facility managers seeking a robust, long-lasting solution for critical flow control.
Dimension, Weight, Cv
| Size | L [in] | d [in] | D [in] | b [in] | n-d | D1 [in] | H (open) [in] | H (close) [in] | Weight [lb] | Cv |
|---|---|---|---|---|---|---|---|---|---|---|
| 2” | 7.01 | 4.74 | 5.98 | 0.63 | 4 - 3/4 | 7.01 | 14.50 | 11.50 | 32.8 | 216 |
| 2-½” | 7.48 | 5.49 | 7.01 | 0.69 | 4 - 3/4 | 7.01 | 16.50 | 13.50 | 44.6 | 345 |
| 3” | 8.00 | 6.00 | 7.51 | 0.75 | 4 - 3/4 | 7.87 | 18.50 | 15.00 | 53.0 | 495 |
| 4” | 9.00 | 7.50 | 9.00 | 0.93 | 8 - 3/4 | 10.00 | 20.75 | 16.50 | 81.6 | 610 |
| 5” | 10.00 | 8.50 | 10.00 | 0.95 | 8 - 7/8 | 11.81 | 24.50 | 19.11 | 96.8 | 1370 |
| 6” | 10.50 | 9.50 | 11.00 | 1.00 | 8 - 7/8 | 11.81 | 28.50 | 22.00 | 140 | 1920 |
| 8” | 11.50 | 11.75 | 13.50 | 1.13 | 8 - 7/8 | 13.70 | 36.50 | 28.25 | 232 | 3600 |
| 10” | 12.99 | 14.25 | 15.98 | 1.19 | 12 - 1 | 15.75 | 44.00 | 33.50 | 362 | 5680 |
| 12” | 14.02 | 17.01 | 19.02 | 1.25 | 12 - 1 | 17.99 | 52.00 | 39.50 | 475 | 8290 |
Material
| Part | Material | Specification |
|---|---|---|
| Body | Cast Iron | A126-B |
| Seat ring | Bronze | |
| Disc ring | Bronze | |
| Disc | Cast Iron | A126-B |
| Stem | Brass | |
| Gasket | Graphite | |
| Bonnet bolt | Steel | A307-B |
| Bonnet nut | Steel | A307-B |
| Bonnet | Cast Iron | A126-B |
| Bushing | Brass | B584 |
| Packing | Graphite | |
| Gland packing | Brass | B584 |
| Gland bolt | Steel | A307-B |
| Gland nut | Steel | A307-B |
| Gland | Ductile Iron | A536 |
| Yoke bushing | Bronze | B62 |
| Yoke bushing nut | Cast Iron | A126-B |
| Screw | Steel | A307-B |
| Handwheel | Cast Iron | A126-B |
| ID plate | Aluminum | |
| Handwheel nut | Ductile Iron | A536 |
| Yoke | Cast Iron | A126-B |