203-107 LEGEND 1-1/2 INCH T-611 PVC CHECK VALVE 🔥
📘 Product Overview
The Legend 203-107 (Model T-611) 1-1/2" PVC Check Valve provides reliable backflow prevention for a variety of residential, commercial, and light industrial applications. Designed for use with Schedule 40 or Schedule 80 PVC pipe, this valve features a soft-seated, fully-guided poppet for silent operation and minimal pressure drop.
Its poppet-style design ensures smooth, linear flow, while the 1/2 lb. cracking pressure allows for efficient opening with minimal restriction. The valve may be installed vertically or horizontally, offering flexibility in system design.
Made from 100% virgin PVC resin, the T-611 delivers dependable performance with corrosion resistance, making it ideal for water and non-compressed air systems.
✅ Key Features
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✅ 1-1/2" PVC check valve (Model T-611)
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✅ Compatible with Schedule 40 and Schedule 80 PVC pipe
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✅ FNPT x FNPT threaded connection
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✅ Soft-seated, fully-guided poppet for silent operation
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✅ Linear flow design minimizes pressure drop
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✅ Cracking pressure: 1/2 lb. positive pressure
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✅ Install vertically or horizontally
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✅ Constructed from 100% virgin PVC resin
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✅ Corrosion-resistant and maintenance-free design
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✅ Not for compressed air or steam service
⚙️ Technical Specifications
| Specification | Value |
|---|
| Model |
T-611 |
| Part Number |
203-107 |
| Size |
1-1/2 Inch |
| Material |
PVC (100% Virgin Resin) |
| Connection Type |
FNPT x FNPT |
| Pipe Compatibility |
Schedule 40 & Schedule 80 |
| Valve Type |
Check (Poppet Style) |
| Cracking Pressure |
1/2 lb. Positive Pressure |
| Max Cold Working Pressure (CWP) |
150 PSI @ 73°F |
| Max Service Temperature |
140°F |
| Steam Rating |
Not Recommended |
| Orientation |
Vertical or Horizontal |
| Service |
Water or non-compressed air |
🔧 Common Symptoms / When to Replace
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Backflow or reverse flow in piping system
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Water hammer or loud “clicking” during operation
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Reduced system pressure or flow restriction
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Leakage around valve body or threads
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Visible cracks or discoloration in PVC housing
❓ FAQ
Q: Can this check valve be used on Schedule 80 PVC pipe?
A: Yes, it is designed for Schedule 40 PVC but will also accept Schedule 80 pipe.
Q: Can it be installed horizontally?
A: Yes, the T-611 may be installed vertically or horizontally.
Q: Is it suitable for compressed air systems?
A: No, this valve is not recommended for compressed air or steam service.
Q: What is the cracking pressure?
A: The valve opens at approximately 1/2 lb. of positive pressure.
Q: Is the internal poppet replaceable?
A: The poppet is not designed for field service — replacement of the valve is recommended if it fails.
🛒 Shopping Tips
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✅ Verify pipe size (1-1/2") and thread type before ordering
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✅ Ideal for water and light fluid systems (non-air)
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✅ For vertical or horizontal installations
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✅ Avoid using with steam or compressed gases
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✅ Pair with Legend T-series valves for consistent system flow
