Product Overview

Armstrong 11-LD/22-LD/13-LD free floating lever liquid drain traps are premium industrial valve products from Armstrong, featuring a proven reliable design validated through years of use, sharing core component structures with quality-stable inverted bucket steam traps to ensure product performance and durability. The product features a sealed anti-vibration construction, with an elliptical float ball combined with a high-force lever design that opens large valve orifice diameters to meet sufficient flow requirements under various working conditions, suitable for applications below 3.9MPa pressure.

Core Structure and Advantages

Structural Features

• Features hemispherical disc, seat, and lever, combined with guide rod design, ensuring accurate sealing under all operating conditions and preventing leakage.
• No side connection design, vent connection size matches inlet and outlet connection sizes, providing better installation adaptability.
• Overall structure is optimized, balancing pressure-bearing capacity and sealing performance, suitable for stable operation requirements in industrial scenarios.

Product Advantages

• Made of high-quality stainless steel with excellent corrosion resistance and high-temperature performance, extending product service life.
• Sufficient flow design, relying on large valve orifice diameter and high-force lever, can efficiently discharge liquids, ensuring system operating efficiency.
• Sealed anti-vibration construction ensures stable performance even in complex industrial environments, reducing maintenance frequency.

Detailed Parameter Information

Physical Dimension Parameters

Model	Nominal Diameter DN	A(mm)	B(mm)	D(mm)	K(mm)	L(mm)
11-LD	15, 20, 20*▲	70	184	-	14	-
22-LD	20	100	224	76	22	67
13-LD	25	114	289	156	30	83

Weight Details

Model	Weight(kg)
11-LD	0.79
22-LD	1.5
13-LD	3.4

Component Material Specifications

Model	Disc and Seat	Lever System	Float Ball	Body and Cover	Gasket
11-LD	Stainless Steel	Stainless Steel	Stainless Steel	Sealed Stainless Steel 304L	-
22-LD	Stainless Steel	Stainless Steel	Stainless Steel	Sealed Stainless Steel 304L	-
13-LD	Stainless Steel	Stainless Steel	Stainless Steel	Sealed Stainless Steel 304L	-

Note: For components not explicitly specified in the table, please consult the manufacturer for special material configurations.

Pressure and Temperature Parameters

Model	Maximum Allowable Pressure (38°C)	Maximum Allowable Pressure (260°C)
11-LD	3.5MPa	3.0MPa
22-LD	4.1MPa	3.3MPa
13-LD	3.9MPa	3.4MPa

Note: In some cases, shell design pressure may exceed float ball pressure capacity. Please follow relevant operating specifications during use.

Installation and Usage Instructions

• Inlet and outlet connection sizes must match the nominal diameter. Model 11-LD includes three connection combinations: ① Inlet DN15 + Outlet DN15, ② Inlet DN20 + Outlet DN20, ③ Inlet DN20 + Outlet DN15.
• During installation, ensure the valve is securely fixed to avoid affecting sealing performance due to vibration, making full use of its sealed anti-vibration construction advantages.
• Product design, materials, weight, and performance parameters are approximate values. Changes may be made without prior notice. Please visit the official website for the latest information.