Bronze Non-Rising Stem Gate Valve | 280B Series | FNPT x FNPT Threaded Ends
The RWV 280B Series Bronze Gate Valve is a compact and durable solution designed for reliable fluid shut-off in tight installations. Featuring a non-rising stem design, this valve maintains its vertical clearance regardless of open or closed position—making it ideal for mechanical rooms, wall cavities, and confined pipe chases.
Constructed from ASTM B62 bronze with a corrosion-resistant DZR brass trim, the 280B Series delivers long-term performance across potable water, HVAC, and hydronic heating systems. Threaded FNPT x FNPT ends meet ASME B1.20.1 standards for universal fit and leak-free sealing.
Built to meet MSS-SP-80 specifications, this valve operates at 125 PSI WSP / 200 PSI WOG and handles elevated temperatures up to 366°F.
✅ Key Features:
- Non-Rising Stem Design – Ideal for tight-space installations; stem remains stationary during valve operation for space efficiency and safety.
- Threaded FNPT x FNPT Ends – ASME B1.20.1 compliant threads ensure fast, secure installation into standard piping systems.
- Rugged Bronze Build – Solid bronze body and wedge, DZR brass stem and ring, and aluminum handwheel for corrosion-resistant strength and durability.
- High-Performance Ratings – 200 PSI from 15°F to 160°F and up to 125 PSI at 366°F, suitable for hot or cold potable water, HVAC loops, and more.
- MSS-SP-80 Compliant – Built to rigorous mechanical specifications for quality, strength, and flow performance.
✅ Applications:
- Hydronic heating and cooling systems
- Potable water shut-off valves
- Mechanical room isolation
- General plumbing systems
- Residential, commercial, and industrial use
Engineered for space-saving control and unmatched durability, the 280B Series delivers efficient shut-off performance in even the tightest piping systems.
Dimension, Cv, Weight
| T | D [in] | H [in/mm] | L [in/mm] | P [in/mm] | R [in/mm] | S [in/mm] | Cv [mm] | Wt. [lb/kg] | Kg |
|---|---|---|---|---|---|---|---|---|---|
| ½" | ½-14 NPT | 2.36 / 60 | 2.76 / 70 | 1.97 / 50 | 0.51 / 13.0 | 0.55 / 14 | 1.06 | 12.4 / 0.60 | 0.27 |
| ¾" | ¾-14 NPT | 2.36 / 60 | 3.23 / 82 | 2.20 / 56 | 0.75 / 19.1 | 0.59 / 15 | 1.30 | 28.5 / 0.92 | 0.42 |
| 1" | 1-11.5 NPT | 2.76 / 70 | 4.09 / 104 | 2.68 / 68 | 1.00 / 25.4 | 0.75 / 19 | 1.53 | 56.8 / 1.53 | 0.70 |
| 1¼" | 1¼-11.5 NPT | 3.35 / 85 | 4.72 / 120 | 2.68 / 68 | 1.26 / 32.0 | 0.75 / 19 | 1.97 | 92.2 / 2.22 | 1.01 |
| 1½" | 1½-11.5 NPT | 3.35 / 85 | 5.51 / 140 | 2.99 / 76 | 1.50 / 38.2 | 0.79 / 20 | 2.20 | 137 / 3.15 | 1.43 |
| 2" | 2-11.5 NPT | 3.94 / 100 | 6.60 / 168 | 3.15 / 80 | 2.00 / 51.0 | 0.83 / 21 | 2.68 | 304 / 4.43 | 2.01 |
All dimensions in inches (in) and millimeters (mm) | Weight in pounds (lb) and kilograms (kg)
| Pressure Rating | Temperature Range |
|---|---|
| 200 psi (1,379 kPa) | 15°F to 160°F (-9°C to 71°C) |
| 125 psi (862 kPa) | Up to 366°F (Up to 186°C) |
psi = pounds per square inch | kPa = kilopascals | °F = Fahrenheit | °C = Celsius
Material
| # | Part | Material | Specification |
|---|---|---|---|
| 1 | Body | Bronze | ASTM B62 C83600 |
| 2 | Wedge | Bronze | ASTM B62 C83600 |
| 3 | Ring | DZR Brass | UNS C35330 |
| 4 | Stem | DZR Brass | UNS C35330 |
| 5 | Bonnet | Bronze | ASTM B62 C83600 |
| 6 | Packing ring | Graphite Sigraflex Apx | - |
| 7 | Packing nut | Brass | ASTM B124 C37700 |
| 8 | Handwheel | Aluminium | - |
| 9 | Disc | Aluminium | - |
| 10 | Nut | Steel / Zn plated | ASTM A36 |