RED-WHITE VALVE CORP.  |  SKU: 30078416  |  MPN: 9957W 2-1/2

Automatic Balancing Valve | 9957W Series | Ductile Iron Wafer | Flanged Class 150

$480.18
Size | Connection Type | Min Order Qty (MOQ)
  • Automatic Flow Control: Factory-set flow cartridges provide consistent GPM independent of pressure fluctuations.
  • Wide Flow Range: Supports flows from 25.4 GPM to 154 GPM with single cartridge; higher flows via multi-cartridge options for DN ≥ 4".
  • Durable Build: Body made from ASTM A536 ductile iron; cartridge housing crafted with DZR brass for corrosion resistance.
  • Compact Wafer Design: Installs between ASME B16.42 Class 150 flanges, includes eyebolt for DN ≥ 4" handling.
  • Thermal Compatibility: Handles water temperatures from 15°F to 260°F; suitable with antifreeze and anti-boiling fluids.

The 9957W Series Automatic Balancing Valve is engineered for precise flow control in hydronic HVAC systems. Constructed from ductile iron and designed to fit ASME B16.42 Class 150 flanges, this wafer-style valve delivers dependable performance across a wide range of flow rates.

Each valve comes pre-configured with one or more high-precision flow cartridges made of DZR brass, maintaining ±5% flow accuracy within a wide ΔP range of 2.0–33 psi. This smart cartridge system ensures consistent hydronic balancing under fluctuating pressure conditions—reducing overflows and pump energy consumption.

Working across flow rates from 25.4 GPM to 2,156 GPM, the 9957W is a versatile solution for medium to large commercial systems. It is factory tested and provided with test ports (plugged, not mounted) and an eyebolt (on DN≥4") for easy lifting and handling.

🔹Key Features:

  • Ductile iron body rated for Class 150 flanges, built to ASTM A536 60-40-18 standard
  • High-accuracy DZR brass cartridges for flow rates from 25.4 to 2,156 GPM
  • No on-site balancing required — automatic cartridge regulation maintains ±5% flow accuracy
  • Compact wafer-style design installs easily between flanges with a low profile
  • Cartridges sized per valve — supports 1 to 14 individual cartridges depending on size

Technical Specifications

  • Body Material: Ductile iron
  • Flange Standard: ASME B16.42 Class 150
  • Flow Range: 25.4–1,778 GPM (configurable)
  • Temperature Range:
    • Water: 15°F–260°F
    • Below 32°F: Requires antifreeze
    • Above 212°F: Requires anti-boil additives
  • Accessories: Eyebolts for DN≥4" valves

Dimension

Size ØD [in] A [in] H [in] # of Cartridge Valve Wt.¹ [lb] Cart. Wt.² [lb] Flow Rate [GPM]
2½" 4.69 6.69 6.38 1 9.0 3.0 25.4-154
3" 5.16 6.69 6.61 1 12.3 3.0 25.4-154
4" 6.42 8.27 7.24 2 18.5 3.0 25.4-308
5" 7.60 8.27 7.83 3 23.4 3.0 25.4-462
6" 8.50 8.27 8.27 4 27.6 3.0 25.4-616
8" 10.7 8.27 9.37 7 34.8 3.0 25.4-1078
10" 12.9 8.27 10.5 10 49.2 3.0 25.4-1,540
12" 15.1 8.27 11.6 14 61.1 3.0 25.4-2,156

¹ Valve weight without cartridge
² Weight per single cartridge

Material

Part Material Specification
1 Body ASTM A536 60-40-18
2 Blind cap ASTM C35330
31 Screw Stainless Steel
41 Washer Stainless Steel
5 Piston Stainless Steel
6 Cartridge body ASTM C35330
7 Cartridge spring AISI 302
8 Cartridge O-ring EPDM Perox
9 Eyebolt Steel
10 Extension ASTM C35330
112 Test point ASTM C35330

1 For 2½" and 3", Stainless Steel Spring is used instead of Screw and Washer
2 Test points include EPDM gaskets and polypropylene ties

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