Cast Iron Static Balancing Valve | 9574P Series | Flanged Ends | Class 125 | 24 – 5,072 GPM
Cast Iron Static Balancing Valve | 9574P Series | Flanged Ends | Class 125 | 24–5,072 GPM
9574P Series Static Balancing Valves are precision-engineered, variable-orifice double-regulating valves designed for hydronic balancing in large HVAC and plumbing systems. Built from ASTM A48 Class 35B cast iron with DZR brass trim, these valves deliver ±5 % accuracy and repeatable performance in flow regulation and system commissioning.
The multi-turn handwheel with memory stop allows precise presetting and repeatable adjustment, while threaded test ports (PT ports included but not mounted) enable direct differential-pressure measurement. Each valve features an alkyd-acrylic coated body for corrosion resistance and is BAA compliant for federal and institutional projects.
Key Features & Benefits
- Accurate Flow Regulation — Multi-turn handwheel design (≥ 5 turns) with memory stop and position indicator for precise repeatable balancing.
- Broad Flow Range — Covers 24 to 5,072 GPM across sizes 2″–16″ to support medium and large hydronic systems.
- Durable Cast Iron Body — Built to ASME B16.1 Class 125 specifications with flat-face flanges and alkyd-acrylic finish for long service life.
- DZR Brass Trim & EPDM Seals — Corrosion-resistant components ensure tight shut-off and chemical compatibility with treated water.
- Project Compliant — Meets Buy American Act requirements for government and institutional installations.
Pressure & Temperature Ratings
| Service Medium | Temperature Range | Working Pressure |
|---|---|---|
| Water | 15 °F – 260 °F (Below 32 °F with antifreeze, above 212 °F with anti-boil fluid) |
ASME Class 125 |
Dimension & Flow Range
| Size | ΦF [in] | ΦK [in] | N × ΦD [in] | L [in] | H [in] | ΦV [in] | Weight [lb] | Flow Range [GPM] |
|---|---|---|---|---|---|---|---|---|
| 2″ | 6.0 | 4.75 | 4×0.75 | 9.1 | 5.1 | 2.9 | 18.3 | 24.1–55.6 |
| 2½″ | 7.0 | 5.50 | 4×0.75 | 11.4 | 8.7 | 5.1 | 32.0 | 47.9–110.2 |
| 3″ | 7.5 | 6.00 | 4×0.75 | 12.2 | 8.7 | 5.1 | 43.0 | 101.4–243.5 |
| 4″ | 9.0 | 7.50 | 8×0.75 | 13.8 | 9.4 | 5.1 | 60.6 | 172.0–412.7 |
| 5″ | 10.0 | 8.50 | 8×0.87 | 15.7 | 9.8 | 5.1 | 83.8 | 267.1–630.1 |
| 6″ | 11.0 | 9.50 | 8×0.87 | 18.9 | 11.2 | 5.1 | 120.2 | 375.8–902.0 |
| 8″ | 13.5 | 11.75 | 8×0.87 | 23.6 | 18.9 | 12.2 | 264.6 | 663.5–1,593 |
| 10″ | 16.0 | 14.25 | 12×1.00 | 28.7 | 20.7 | 12.2 | 394.6 | 1,055–2,485 |
| 12″ | 19.0 | 17.00 | 12×1.00 | 33.5 | 21.1 | 12.2 | 553.4 | 1,493–4,058 |
| 14″ | 21.0 | 18.75 | 12×1.13 | 38.6 | 25.6 | 13.8 | 826.7 | 1,521–4,137 |
| 16″ | 23.5 | 21.25 | 12×1.13 | 43.3 | 29.5 | 13.8 | 1,124.4 | 1,854–5,072 |
Material Construction
| # | Component | Material | Specification |
|---|---|---|---|
| 1 | Body | Cast Iron | ASTM A48 Class 35B |
| 2 | Bonnet | Cast Iron | ASTM A48 Class 35B |
| 3 | Stem & Trim | DZR Brass | C35330 |
| 4 | Handwheel | Polyamide | PA 6.6 |
| 5 | O-Rings & Gaskets | EPDM / EPDM Perox | — |
| 6 | Fasteners | Steel / Brass | A2 / C27200 / 8.8 Grade |
| 7 | Test Ports | DZR Brass | C35330 |
Applications: Ideal for HVAC hydronic circuits, chilled water systems, and heating loops requiring precise balancing and flow measurement capability.