Compact butterfly wafer valve provides a low-cost valve solution

butterfly wafer valve [butterfly wafer valve]

Omega Valves has different butterfly wafer valves available to meet your requirements.

Butterfly wafer valves are used for isolating or controlling the flow of fluids. The butterfly valve can be operated either manually by hand (locally) or automatically by an actuator (remotely). Most butterfly wafer valve are bi-directional and can be installed in either direction, regardless of the flow.

Butterfly wafer valves are smaller and lighter than other butterfly, ball, gate or globe valves. The simple construction and operating principles make the butterfly wafer valves a cost-effective option.

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Benefits of butterfly wafer valve

Features	Benefits
Compact design	The valve has small dimensions and takes less space. The butterfly wafer valve is therefore ideal to use under tanks and other confined areas where large valves cannot fit.
Low weight	Butterfly wafer valves are light in weight. The valves are easy to install and require less manpower. The low weight of the butterfly wafer valve allows for it to be used on pipes with minimal support.
Low cost	The disc, stem and seat are the only parts of the valve that come in contact with the substance. The body of the valve can therefore be constructed of an economical material. The overall cost and manufacturing time of the valve is minimised by the low-price material and the simple design of the butterfly wafer valve.
Multi-flange fitting	Butterfly wafer valves can be used on both American standard flanges (ANSI) and German standard flanges (PN16).
Uniformity of design	Most manufacturers of butterfly wafer valves follow similar measurements, enabling the valves to be replaced easily. The uniformity of design eliminates the need to alter or cut the pipework.

Butterfly valves are suitable for the following applications

The butterfly wafer valve can only be used between flanges and not at the end of line, where there is only one flange.

Most butterfly valve types are suitable for controlling the flow of air, powders and fluids.
Special polytetrafluoroethylene (PTFE) lined butterfly valves are available for applications involving acids and aggressive chemicals.
Metal Inconel or RPTFE seats with a carbon or stainless-steel body, is available on request for application in extreme temperatures and pressures.

Butterfly valves are not suitable for bulky or dry substances that can potentially wedge between the disc and seat and hinder the smooth operations.

Butterfly wafer valves are ideal for the following industries

Water and effluent treatment factories
HVAC
Building services
Refrigeration
Oil and Gas
Chemical industry
Manufacturing
Bulk handling
Pharmaceutical

Butterfly wafer valves are used in the following locations

Houses
Offices
Hospitals
Manufacturing factories
Oil refineries and oil rigs
Power stations
Water treatment plants
Gas works

All butterfly wafer valves supplied by Omega Valves comply with the following standards

ATEX
BS OHSAS 18001
DGRL
DIN EN ISO 14001
DIN EN ISO 9001
DVGW
EAC
Fire Safe
GOST (outbound)
SIL
TA Luft
API 609 & API 598

Types of butterfly wafer valve

Double flanged butterfly valve
Concentric butterfly valve
Double offset butterfly valve
Triple offset butterfly valve

The butterfly wafer valves are available in the following materials

Cast iron
Carbon steel
Stainless steel

Benefits of butterfly wafer valve

Seat	Temperature	Uses
EPDM	-30⁰c to +110⁰c	Air, water, ethyl alcohol, sugar industry, ammonium, weak acids hot water.
EPDM (HT)	-30⁰c to +145⁰c	Hot water steam.
Neoprene	-40⁰c to +95⁰c	Alkali acids, acids base.
Buna - N	-30⁰c to +90⁰c	Gasoline, diesel oil, vegetable oils, machine oils, natural gas, seat water, synthetic thinner.
Viton	-30⁰c to +205⁰c	Acid, detergent, water, steam, vegetable oils.
Silicon	-55⁰c to +175⁰c	Petroleum, hydroxides, alcohol, alkali.
PTFE	-40⁰c to +200⁰c	Acids, alcohol, ethyl oxide, ammonium, hexane, ether, benzene, hydrogen sulphide.
RPTFE	-40⁰c to +232⁰c	In higher temperatures with acids, alcohol, ethyl oxide, ammonium, hexane, ether, benzene, hydrogen sulphide, low pressure steam.
Stainless steel	-269⁰c to +649⁰c	Cryogenic and low temperature applications with liquid helium, liquid nitrogen, high temperature steam and hot oil.