RED-WHITE VALVE CORP.  |  SKU: 30077747  |  MPN: RW-504 1/2

RW-504 Brass Boiler Drain

$11.70
Size
$50 minimum order required
  • ASME-Compliant Speed: ½” MNPT threads (B1.20.1) enable rapid, tool-free installation in industrial or HVAC systems under 125 PSI pressure.
  • Thermal Stress Resistance: Brass body and solder joints endure extreme temps (-20°F to 400°F) without cracking or leaking.
  • Cross-System Compatibility: Swap seamlessly between threaded (MNPT) and soldered copper setups—ideal for retrofitting old boilers or new builds.
  • Zero-Flow Loss Spout: Reinforced kink-proof design maintains full-bore drainage even during emergency steam or chemical releases.

Upgrade your system’s draining efficiency with the RW-504 Brass Boiler Drain, engineered for durability and hassle-free operation in high-pressure environments. Featuring a robust brass body, a kink-resistant spout, and versatile connection options, this drain ensures reliable performance in industrial, HVAC, or residential applications.

Key Features & Benefits:

  • 125# CWP Rating: Built to withstand 125 PSI cold water pressure for boilers, hydronic systems, and industrial equipment.
  • No-Kink Spout: Reinforced design prevents twisting and flow interruptions, even during high-pressure drainage.
  • Dual Connection Versatility:
    • MNPT x Hose End: ASME B1.20.1-NPT compliant threads for secure, leak-proof threaded installations.
    • Solder Compatibility: ½” size accepts copper tubing for permanent, corrosion-resistant joints.
  • Brass Durability: Corrosion-resistant brass construction ensures longevity in extreme temperatures and harsh environments.

Ideal For:

  • Commercial boiler systems and pressure vessels
  • HVAC maintenance and hydronic heating drains
  • Industrial equipment fluid management
  • Outdoor plumbing in freeze-prone or high-vibration settings

Why Choose This Drain?

The RW-504 combines rugged brass construction with unmatched flexibility. Its no-kink spout guarantees uninterrupted flow, while the dual connection options (threaded or soldered) adapt seamlessly to existing piping systems. Perfect for technicians prioritizing speed, reliability, and adaptability in critical draining tasks.

Specifications:

  • Material: Solid Brass Body
  • Pressure Rating: 125# CWP
  • Connection: ½” MNPT x Hose End (ASME B1.20.1-NPT) or Solder-Compatible Copper Tube
  • Design: No-Kink Spout, Heavy-Duty Ball Valve

Note: For solder joints, use lead-free solder and flux. Compatible with standard garden hoses for easy draining.

Dimension

Size T S [in] F A [in] C [in] H [in] B [in] P [in] D [in] Wt. L [lb]
1/2" 1/2-14 NPT 0.627-0.631 3/4-11.5NH 1.46 0.61 3.43 2.09 0.51 0.47 0.44
3/4" 3/4-14 NPT - 3/4-11.5NH 1.46 0.62 3.44 2.09 0.51 0.47 0.46
Pressure Rating Max Temperature
125 CWP 180°F
Solder Used Temp (°F) Max Pressure (PSI)
95-5 Tin Antimony
(ASTM B32 Grade 95TA)
100 500
150 400
200 300
250 200

Material

Item Part Material Specification
1 Body Brass ASTM B283 C37700
2 Stem Brass ASTM B124 C37700
3 Seat gasket NBR 70SH NSF approved
4 Bonnet gasket PTFE -
5 Bonnet Brass ASTM B283 C37700
6 Packing ring PTFE -
7 Packing nut Brass ASTM B124 C37700
8 Handwheel Steel -
9 Disc Aluminum -
10 Nut Steel (Zn plated) ASTM A36