Double Eccentric Pneumatic Wafer Butterfly Valve ANSI 150Lb 2inch RTFE Seat Carbon Steel

The double eccentric pneumatic wafer butterfly valve is an industrial valve device driven by steam power, mainly used for flow control of fluids such as water, gas, oil and media containing particles. The pneumatic high-performance butterfly valve main body is made of stainless steel or cast steel valve body, with PTFE valve seat. The applicable temperature range covers -40℃ to +600℃. The pneumatic high-performance double eccentric butterfly valve supports wafer and flange connections (in compliance with DIN/ANSI/JIS standards), and the nominal pressure can reach PN40 Class300LB.

This valve adopts a triple-eccentric or double-eccentric structure design. It achieves high-precision regulation through zero-friction opening and closing between the valve plate and the valve seat, with an adjustable ratio of up to 100:1. It is also equipped with self-lubricating bushings and other components to enhance durability. The core components, the butterfly plate and the valve body, can be customized in stainless steel or alloy materials. The high performance double eccentric pneumatic wafer butterfly valve seat is made of PTFE material to adapt to high-temperature, high-pressure and granular medium working conditions. The product complies with standards such as GB/T12238 and API609, with a nominal diameter ranging from DN50 to 1200mm. It is widely used in fields such as petrochemicals, metallurgy, power, and environmental protection. The wear problem of traditional valves is solved by optimizing the butterfly plate trajectory and sealing structure, and it supports double-sided pressure-holding sealing.

01) Actuator Body : Corrosion protected aluminium extruded body.
02) Movement Option : 2 Position 90° Turn , 2 Position 120° Turn , 2 Position 180° Turn , 3 Position 90° Turn , 3 Position 180° Turn.
03) Indicator : It is standard on all actuators.
04) Caps : Aluminium extruded caps provide maximum resistance against corrosion, caps are suitable for single and double acting actuators.
05) Stroke Adjustment : Permit adjustment of ± 5% in both directions.
06) Springs : Cartridge design and corrosion resistant springs.
07) Piston Bearing O-rings : Long lasting
08) Nuts and Bolts : Stainless steel and high resistance for corrosion.
09) Actuator Pistons : Aluminium injections. High quality o-rings and against corrosion.
10) Connections : Limit Switch Box , Proximity Switch , P/P Pneumatic Positioner ( Control Input Signal Is 0.20-1.03 Bar or 3-15 PSI ) , E/P Electro Pneumatic Positioner ( Control Input Signal Is 4-20mA ) , 3/2 Way Namur Solenoid Valve , 5/2 Way  Namur Solenoid Valve , Air Filter Regulator , Declutchable Gear Box , Ball Valve , Butterfly Valve , Plug Valve
11) Cycle Life : 1,000,000 Operations

12) Temperature Range : High Temperature (FKM) -15°C~+150°C / +5°F~+302°F , Standard Temperature (NBR) -20°C~+80°C / -4°F~+176°F , Low Temperature (L-NBR) -40°C~+65°C / -40°F~+149°F

13) Air Supply Pressure : Minimum supply pressure is 2.41 Bar or 35 PSI , Maximum supply pressure is 10.34 Bar or 150 PSI

14) Actuator Operation Mode :

• Single Action ( Spring Return / Fail-Safe )
Option No.1: Air-To-Open / Fail Close / FC / Spring-To-Close / Normally Closed / NC
Option No.2: Air-To-Close / Fail Open / FO / Spring-To-Open / Normally Open / NO

• Double Action
Air-To-Open And Air-To-Close

Air to port A forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Air to port B forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A.

Air to Port A forces the pistons outwards, causing the pinion to turn clockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port A.

● Q1: ARE YOU A MANUFACTURER OR A TRADE COMPANY?

A1: We are a 29 years professional valve automation integration valve manufacturer, we produce and sale directly from our factory.

● Q2: IS THERE A TECHNICAL ENGINEER'S GUIDE FOR INSTALLATION BEFORE OR AFTER SALE?

A2: Yes, no worries. Our technical engineer will remote video, installation guide, commissioning valve.

● Q3: WHAT IS YOUR TERMS OF PAYMENT?

A3: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

● Q4: WHAT IS YOUR TERMS OF DELIVERY?

A4: EXW, FOB, CFR, CIF, DAP, DDP. 

● Q5: HOW ABOUT YOUR DELIVERY TIME?

A5: Generally, it will take 2 to 5 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

● Q6: DO YOU TEST ALL YOUR GOODS BEFORE DELIVERY?

A6: Yes, we have 100% test before delivery.

● Q7: HOW DO YOU MAKE OUR BUSINESS LONG-TERM AND GOOD RELATIONSHIP?

A7: We keep good quality and competitive price to ensure our customers benefit; we respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.