236BT Bronze Swing Check Valve
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 |