9517 DZR Brass Fixed Orifice Static Balancing Valve
The 9517 DZR Brass Static Balancing Valve combines a fixed orifice Venturi insert with multi-turn precision adjustment to deliver accurate flow regulation in HVAC, plumbing, and industrial applications. Its double-regulating globe valve design ensures reliable performance with ±3% Cv tolerance (tested per BS7350), while the integral memory stop preserves settings for repeatable balancing.
Key Features & Benefits
✅ Venturi Insert Design – Fixed orifice for consistent flow measurement and reduced turbulence.
✅ Adjustable Handwheel – Multi-turn adjustment (4+ full turns) for fine-tuned flow control.
✅ Positive Shut-Off – Integral memory stop locks settings and prevents tampering.
✅ Durable Construction – DZR brass resists dezincification for long-term reliability.
✅ Flexible Connections – Choose NPT threaded (ASME B1.20.1) or solder joint (ASME B16.22) ends (Model 9519).
✅ Test Points Included – Simplify commissioning and maintenance with built-in pressure taps.
Technical Specifications
- Pressure Rating: 300WOG
- Temperature Range:
-
Water: 15°F to 260°F
- Below 32°F: Requires antifreeze additives
- Above 212°F: Requires anti-boiling additives
- Standards: BS7350 (design and testing), ASME B1.20.1/B16.22 (connections)
- Cv Tolerance: ±3% (factory-tested)
Applications
- Hydronic heating/cooling systems
- HVAC balancing
- Industrial process water control
- Plumbing networks requiring precise flow regulation
Why Choose This Valve?
✔ BS7350-Compliant – Ensures accuracy and repeatability.
✔ BAA-Approved – Meets stringent water quality standards.
✔ Low Maintenance – Corrosion-resistant DZR brass and robust design.
Available Models:
- 9517: Threaded (NPT) ends with test points
- 9519: Solder joint ends with test points
Order today for reliable, precision balancing in critical systems!
Dimension, Weight
| Size | N | ΦC¹ [in] | H [in] | L² [in] | B² [in] | Weight² [lb] | Flow range [GPM] |
|---|---|---|---|---|---|---|---|
| X-½" | ½ - 14 NPT | 0.627-0.631 | 4.06 | 3.46/3.74 | 0.71/0.55 | 1.23/1.16 | 0.12-0.36 |
| U-½" | ½ - 14 NPT | 0.627-0.631 | 4.06 | 3.46/3.74 | 0.71/0.55 | 1.23/1.16 | 0.27-0.71 |
| L-½" | ½ - 14 NPT | 0.627-0.631 | 4.06 | 3.46/3.74 | 0.71/0.55 | 1.23/1.16 | 0.49-1.17 |
| ½" | ½ - 14 NPT | 0.627-0.631 | 4.06 | 3.46/3.74 | 0.71/0.55 | 1.23/1.16 | 0.98-2.35³ |
| ¾" | ¾ - 14 NPT | 0.877-0.881 | 4.06 | 3.78/4.18 | 0.75/0.76 | 1.43/1.34 | 2.19-5.15³ |
| 1" | 1 - 11.5 NPT | 1.128-1.131 | 4.06 | 3.94/4.57 | 0.89/0.92 | 1.73/1.55 | 4.09-9.56³ |
| 1¼" | 1¼ - 11.5 NPT | 1.378-1.381 | 4.85 | 4.63/5.28 | 0.98/0.98 | 2.78/2.53 | 8.56-19.81³ |
| 1½" | 1½ - 11.5 NPT | 1.628-1.632 | 4.94 | 5.00/5.90 | 0.98/1.10 | 3.50/3.16 | 12.84-29.80³ |
| 2" | 2 - 11.5 NPT | 2.128-2.132 | 5.34 | 5.72/6.73 | 1.15/1.35 | 4.80/4.46 | 24.09-55.63³ |
Material
| Part | Material | Specification |
|---|---|---|
| 1 | Body | DZR Brass UNS C35330 |
| 2 | Venturi insert | DZR Brass UNS C35330 |
| 3 | Balancing cone | DZR Brass UNS C35330 |
| 4 | Gasket disc | PTFE |
| 5 | Disc¹ | DZR Brass UNS C35330 |
| 6 | Disc O-ring¹ | EPDM Perox |
| 7 | Shutter | DZR Brass UNS C35330 |
| 8 | Stem O-ring | EPDM Perox |
| 9 | Union¹ | DZR Brass UNS C35330 |
| 10 | Stem | Brass ASTM B124 C37700 |
| 11 | Bonnet | DZR Brass ASTM C35330 |
| 12 | Stop spring ring | Spring steel |
| 13 | Screw | Steel |
| 14 | Handwheel | ABS (blue) |
| 15 | Nut | Steel / Zn plated |
| 16 | Test point | DZR Brass² UNS C35330 |
¹ Only on 1½", 1½" and 2"
² Test points with EPDM Perox gaskets and polypropylene ties