RED-WHITE VALVE CORP.  |  SKU: 30078480  |  MPN: 236BT 1/4

236BT Bronze Swing Check Valve

Size
$50 minimum order required
  • FDA-Compliant PTFE Sealing – Virgin PTFE seat meets food/pharma-grade standards, eliminating contamination risks in sanitization-critical systems.
  • 360° Y-Pattern Service Access – Full in-line disc inspection/clearing without pipe disassembly, cutting maintenance time by 40% vs standard checks.
  • Chlorine & Glycol Defense – Withstands aggressive media (up to 200 PSI WOG) that degrade metal seats, ideal for water treatment or antifreeze loops.
  • ASME + MSS-SP-80 Dual Certification – Guarantees both thread integrity (B1.20.1) and valve performance under thermal/chemical stress.

Engineered to excel in corrosive and high-purity systems, the 236BT Bronze Swing Check Valve combines a virgin PTFE seat with a maintenance-friendly "Y" pattern design, delivering reliable backflow prevention in water, oil, gas, and low-pressure steam applications. MSS-SP-80 compliant and built with corrosion-defiant materials, this valve ensures leak-free performance where chemical resistance and ease of service are critical.

Key Features & Benefits

✔️ Virgin PTFE Seat – Superior chemical inertness against acids, solvents, and caustic fluids, ideal for aggressive media.
✔️ Wye-Pattern Accessibility – Inspect or clean the disc without removing the valve from the pipeline, minimizing downtime.
✔️ DZR Brass Disc & Bronze Body – Dezincification-resistant disc paired with ASTM B62 bronze for longevity in corrosive environments.
✔️ 125# WSP / 200# WOG Ratings – Certified for 125 PSI steam and 200 PSI water/oil/gas service.
✔️ ASME B1.20.1-NPT Threads – Leak-proof FNPT connections for quick, secure installations.

Technical Specifications

  • Body: Bronze (ASTM B62 C83600)
  • Disc: DZR Brass (UNS C35330)
  • Seat: Virgin PTFE (Exclusive to 236BT Model)
  • Ends: FNPT x FNPT
  • Pattern: Swing Check, "Y" Type
  • Standards: MSS-SP-80, ASME B1.20.1
  • Pressure Ratings:
    • 200 PSI WOG (Water, Oil, Gas)
    • 125 PSI WSP (Steam)

Why Choose the 236BT Over the 236B?

  • Zero Contamination: PTFE seat prevents material degradation in pharmaceutical or food-grade systems.
  • Reduced Friction: Smoother disc movement lowers torque requirements for consistent sealing.
  • Chemical Versatility: Resists glycol, chlorinated water, and acidic media better than metal seats.

Ideal Applications

  • Chemical processing and injection systems
  • HVAC hydronic loops with antifreeze solutions
  • Industrial steam condensate recovery
  • Oil/gas pipelines with corrosive additives
  • Water treatment plants using chlorine or ozone

Built for Demanding Performance

 MSS-SP-80 Certified – Meets rigorous industry standards for swing check valves.
 Low Maintenance – Y-pattern design enables in-line servicing, reducing operational costs.
 Dual-Model Flexibility – Pair with the 236B (Metal Seat) for high-temperature steam or standalone 236BT for chemical duty.

Engineered to Endure – Trusted where chemical resistance and reliable backflow prevention are non-negotiable.

Compliant | Chemically Inert | Maintenance Optimized

Dimension, Cv, Weight

Size Thread (NPT) H (in/mm) L (in/mm) P (in/mm) Cv Wt. 236B (lb/g) Wt. 236BT (lb/g)
1/4" 1/4 - 18 NPT 1.57 / 40 2.04 / 52 0.51 / 13 4.81 0.44 / 200 0.47 / 213
3/8" 3/8 - 18 NPT 1.57 / 40 2.04 / 52 0.51 / 13 4.81 0.45 / 204 0.45 / 204
1/2" 1/2 - 14 NPT 1.67 / 42 2.20 / 56 0.59 / 15 6.18 0.58 / 263 0.58 / 263
3/4" 3/4 - 14 NPT 1.97 / 50 2.76 / 70 0.75 / 19 11.1 0.96 / 435 1.04 / 472
1" 1 - 11.5 NPT 2.28 / 58 3.15 / 80 0.99 / 25 18.1 1.34 / 608 1.36 / 617
1 1/4" 1 1/4 - 11.5 NPT 2.71 / 69 3.78 / 96 1.25 / 32 37.4 2.28 / 1034 2.24 / 1016
1 1/2" 1 1/2 - 11.5 NPT 3.19 / 81 4.33 / 110 1.50 / 38 53.6 3.23 / 1465 3.23 / 1465
2" 2 - 11.5 NPT 3.86 / 98 5.04 / 128 1.97 / 50 91.1 5.21 / 2363 5.21 / 2363
2 1/2" 2 1/2 - 8 NPT 4.57 / 116 6.14 / 156 2.50 / 64 147 8.27 / 3751 8.47 / 3842
3" 3 - 8 NPT 5.35 / 136 7.24 / 184 3.00 / 76 211 11.73 / 5321 12.06 / 5470
Pressure Rating Temperature Range
200 PSI 15°F to 160°F
(-9°C to 71°C)
125 PSI (Max) Up to 366°F
(186°C)

*Temperature conversions shown for international reference

Material

Part Material Specification
1 Body Bronze
ASTM B62 C83600
2 Disc DZR Brass
UNS C35330
3 Stem Brass
ASTM B124 C37700
4 Screw Brass
ASTM B124 C37700
5 Gasket PTFE
TF1502
6 Cap Bronze
ASTM B62 C83600
7 Name Plate Aluminum
-
8* Gasket PTFE
-
9* Nut Brass
ASTM B124 C37700


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