Description
Armstrong 11-LD is a high-performance stainless steel free-floating lever liquid drain designed for industrial steam systems, compressed-air drainage, and other liquid discharge applications. Its advanced guided lever mechanism ensures efficient drainage with zero air loss and is suitable for medium- and high-load applications, including industrial compressors up to approximately 1500 hp. Its sealed, tamper-resistant construction is based on Armstrong inverted bucket steam trap technology, providing reliable durability and corrosion resistance for demanding industrial service. Keywords: Armstrong 11-LD, liquid drain, stainless steel valve, steam trap, high-capacity drainage.
Key Features
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High-efficiency drainage design: The elliptical float and high-leverage system open a large orifice to provide drainage capacity of up to 9,500 lb/h (4309 kg/h), making it suitable for industrial applications.
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Zero-loss performance: Automatic drainage requires no timer adjustment and ensures tight shutoff under varying conditions to prevent gas or steam leakage.
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Durable construction: All-stainless-steel construction is suitable for corrosive environments and saturated steam service.
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Easy installation: Threaded (NPT/BSP) or flanged connections are available for compatibility with various piping systems.
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Safe and reliable: Guide posts ensure positive valve closure and reduce the risk of leakage.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | 11-LD |
| Materials | Body/cover: 304L stainless steel (standard, optional 316 stainless steel); float: 304 stainless steel; valve/seat: 440 stainless steel; lever: stainless steel |
| Connection Size | Inlet/outlet: 3/4 in (20mm); outlet: 1/2 in (15mm) |
| Dimensions | A: 2-3/4 in (70mm); B: 7-1/4 in (184mm); weight: approximately 3.25 lb (1.5kg) |
| Maximum Capacity | 9,500 lb/h (4309 kg/h) |
| Maximum Pressure | 570 psig (39 bar); 35 bar at 38°C |
| Operating Temperature | Suitable for steam and liquid service, depending on pressure |
| Applications | Steam system drainage, air compressors, industrial liquid discharge, and more |
Advantages and Applications
Armstrong 11-LD stands out in the industrial valve market with its high-leverage design and stainless steel construction, ensuring stable long-term operation while reducing maintenance costs. It is suitable for the chemical, manufacturing, energy, and other industries, helping optimize system efficiency and reduce energy losses. For applications requiring a reliable stainless steel steam trap or liquid drain valve, 11-LD is an ideal choice and is compatible with a wide range of industrial compressors and piping systems.
Related Documents
- Armstrong 11-LD Datasheet PDF - Includes detailed material lists, physical data, and capacity charts.