Aluminum Bronze 28” 150LB Lug End Triple Offset Butterfly Valve

Specification

Valve Size	DN50-1600, NPS 2-60
Pressure Rating	N1-100, 150LB-600LB
Materials	WCB, LCB, LC1, CF8, CF8M, CF3, CF3M, 4A, 5A, WC6, WC9, C95800
Design and Manufacturing Standards	API 609, EN 593
Face to Face Standards	API 609, EN 558, ISO 5752
Flange Size Standards	ASME B 16.5, ASME B16.47, EN 1092-1, GOST 54432, JIS 2220
Stress Test Standards	API 598, EN 12266-1
Fire Safety Test Standard	API 607
Quality/Product Certifications	ISO9001, ISO14001, ISO18001
Unorganized Emissions	ISO 15848-1, API 622
National ACE	NACE MR0175, NACE MR0103
Valve Operator Options	hand wheel, worm wheel, electric actuator, pneumatic actuator, hydraulic actuator.
Shutdown Level	API 598 (Zero leakage)
Aperture	full aperture
Process Connection Types	sandwich, flange, lug, welding

Product Overview

What is lug Triple Offset butterfly valve

The lug triple eccentric butterfly valve is a specially designed butterfly valve that combines a lug connection and a triple eccentric design. Lugs usually refer to structures that have raised parts on the flange connection to help improve the stability and tightness of the connection. The three-eccentric design includes eccentricity in three directions of axis, radius and Angle to reduce operating torque, improve sealing performance and extend valve life.

Lug Triple Offset butterfly valve how to work

The working principle of the lug triple eccentric butterfly valve is based on its unique design. In the closed state, the lug flange ensures that the valve is securely attached to the pipe, creating an effective seal. When the valve needs to be activated, the disc begins to rotate, and the three-eccentric design includes eccentricity in three directions: axial, radius and Angle. This design reduces operating torque and makes opening and closing easier.
As the disc rotates, the valve gradually opens to allow fluid to pass through. In the fully open state, the plate is parallel to the direction of fluid flow, minimizing fluid resistance. When closed, the plate rotates again into place, and the lug flange ensures a reliable seal that prevents fluid leakage.

Valve Details

Lug connection

The valve is connected with lug flanges to ensure a solid pipe connection and improve the stability and reliability of the system.
Three-eccentric design

The three-eccentric design includes eccentricity in the three directions of axis, radius and Angle, which reduces the operating torque, improves the efficiency of opening and closing, and extends the valve life.