Crafted with a forged brass body and a chrome-plated brass ball, this valve delivers high performance under pressure and long-term reliability, even in aggressive environments. Whether you’re managing water, oil, or gas lines, the 5581 model is built to handle it all with confidence.
Key Features:
- Pressure Rating: 600 PSI WOG (Water, Oil, Gas) | 150 PSI WSP (Steam)
- Temperature Range: 15°F to 366°F
- Full Port Design: Allows maximum flow with minimal pressure drop (Cv up to 360)
- Connection Type: Male x Female NPT threaded ends for secure fit
- Blowout-Proof Stem: Enhanced safety and valve integrity under pressure
- Adjustable PTFE Packing: Minimizes leakage and supports long service life
- Heavy-Duty Handle with PVC Sleeve: Comfortable grip, solid control
Built to Last:
- Body & End Piece: Brass (ASTM B283 C37700) – corrosion-resistant and lead-free
- Ball: Brass with Chrome Plating – ensures smooth operation and durability
- Stem: Brass (ASTM B124 C37700)
- Seats & Packing: High-grade PTFE – chemical-resistant and low-friction
- O-Ring: NBR – excellent sealing under varied conditions
- Handle & Nut: A36 Steel with a PVC Sleeve – rust-resistant and easy to use
Typical Applications:
Ideal for a wide range of uses, including:
- HVAC systems
- Industrial piping
- Water treatment
- Commercial plumbing
- Oil & gas distribution
- Steam lines (up to 150 PSI)
This isn’t just a valve — it’s peace of mind. With over 50 years of industry reputation, Red-White Valve Corp. is known for manufacturing some of the most reliable, ANSI-compliant, and maintenance-friendly valves in the market.
Whether you’re building new systems or replacing existing valves, the 5581 gives you what you need: performance, safety, and precision — with zero compromise.
Dimensions, Weights (inches-lbs.) & Valve Data
| Size | B (in) | C (in) | E (in) | Cv | Weight (lbs) |
|---|---|---|---|---|---|
| 1/2\\” | 2.35 | 1.80 | 3.40 | 15 | 0.47 |
| 3/4\\” | 2.50 | 1.95 | 3.40 | 30 | 0.67 |
| 1\\” | 3.00 | 2.30 | 4.70 | 60 | 1.16 |
| 1-1/4\\” | 3.40 | 2.50 | 4.70 | 110 | 1.87 |
| 1-1/2\\” | 3.60 | 2.90 | 5.30 | 130 | 2.74 |
| 2\\” | 4.20 | 3.20 | 5.30 | 360 | 4.07 |
| Pressure / Temperature Ratings | |
|---|---|
| 600 PSI from 15°F to 160°F | 150 PSI MAX at 366°F |
Materials & Specifications
| Item | Description | Material | Specification |
|---|---|---|---|
| 1 | Body | Brass | B283 C37700 |
| 2 | Seat | PTFE | PTFE |
| 3 | Ball | Brass / Chrome Plated | B283 C37700 |
| 4 | End Piece | Brass | B283 C37700 |
| 5 | Stem | Brass | B124 C37700 |
| 6 | Packing | PTFE | PTFE |
| 7 | O-ring | NBR | NBR |
| 8 | Packing | PTFE | PTFE |
| 9 | Packing Nut | Brass | B124 C37700 |
| 10 | Handle | Steel | A36 |
| 11 | Handle Nut | Steel | A36 |
| 12 | Handle Sleeve | PVC | PVC |



