Find butterfly valves including industrial butterfly valves, butterfly control valves, wafer butterfly valves and more. From plastic butterfly valves to stainless steel butterfly valves, you will find the butterfly valve you need. Use the time-saving Request for Quote tool to submit your inquiry to all the butterfly valve manufacturers and suppliers you select.
Butterfly Valves & Controls, as the exclusive USA Representative of Value Valves Co., supplies resilient seated wafer and lug butterfly valves, along with high-performance, triple eccentric and AWWA butterfly valves. In-house assembly of valves with lever or gear operators, electric or pneumatic actuators.
Since 1969, we have produced butterfly dampers for the glass & steel industries. We have added to our line to include the Flate-O-Seal & Ev-O-Seal butterfly valves for the cement & mining industries. Our fabricated line of butterfly valves includes guillotine valves, dampers, gates & separators.
We stock butterfly valves, one of many products we offer for several industries and applications such as the pharmaceutical and food industries. Bradford brand valve sizes are from ½” – 10”. Our butterfly valves are available in a choice of finishes with custom valves also an option if requested.
Archon Industries is a manufacturer & distributor of processing equipment. We provide butterfly valves — stainless steel with heat-insulated handle plus clamp end, manual & butt-weld for the brewing & wine industries. We are your reliability solution when it comes to varieties of valve equipment.
NY Valves, part of The Nocado Group, distributes stainless steel butterfly valves, as well as butterfly valves fitted with handles, & ball valves. Our products are certified in accordance with DIN EN ISO 9001 for use in the food, pharmaceutical, chemical, biotechnology & sewage treatment industries.
Butterfly valves are a particular type of valve that
uses either a circular vane or a disc as the shut-off mechanism. Butterfly
valves have a quick opening/closing quarter-turn mechanism that is used
to control the flow of liquid through a piping system. They typically
pivot on axes perpendicular to the direction of flow inside the flow
chamber. Compared with ball
valves, butterfly valves do not have pockets to trap fluids when
the valve is in the closed position. Butterfly valves are frequently
used as throttling devices, controlling the levels of flow in entirely
closed, entirely open or partially open positions. They can control
various substances of air, liquid or solid currents and are situated
on a spindle that allows for flow in a single direction.
Butterfly valve suppliers offer their products in many diameters, resulting
in different flow rates. Smaller butterfly valves assemblies may be
used where space is limited. Knowing the pipe dimensions, desired flow
rate and material is important when considering butterfly valve suppliers.
Installation time is typically short compared to some other types of
valves, and additional parts are unnecessary to work and maintain the
valve. Butterfly valves have a lever that allows the operator to open
or close the valve to control the flow. These butterfly valves are part
of a family known as rotary valves, which are defined by the quarter
turn that is used to move from the open to closed position and vice
versa. This results in a lower surface friction, which means that these
valves can be smaller than others and still operate efficiently.
Butterfly valve suppliers stock numerous closure types and body configurations,
depending on the type of flow control needed. These types of butterfly
valves are commonly composed of metals like aluminum and stainless
steel, but also can be made from various plastics.
A certain kind, flange butterfly valves, can be mounted between flanges.
Another, the lug butterfly valve, uses metal inserts that are attached
to the valve’s bolt holes. Using an independent set of bolts
for each flange, this butterfly valve’s assembly is fixed between
two flanges. Finally, wafer
butterfly valves are the cheapest and most
popular type of butterfly valves because of their simplicity and ease
of use.
Butterfly valves are used in many food transporting and chemical plants
where controllable product flow is required. Other specific industries
include HVAC, tertiary petroleum recovery and industries that use
high pressure water. When properly used, butterfly valves offer many
benefits. First of all, they are priced lower than many other types
of valves, and generally have a longer life cycle. Butterfly valves
are easy to maintain, lightweight and compact and able to handle a
wide range of temperatures. These valves are also very reliable because
of their tight shut-off, reducing the amount of leakage. One of the
problems with butterfly valves, however, is that their design makes
it difficult to efficiently and thoroughly clean all residual contaminants.
Also, they are not good for use with highly abrasive or corrosive
materials because the disc can be easily eroded. Though overall, butterfly
valves are one of the fastest growing types of valves in the industry.
Aluminum butterfly valves
use various grade aluminums for their makeup. Aluminum is commendable
for its ultra lightweight and above average strength, but unlike stainless
steel, aluminum is prone to corrosion over time.
Lug butterfly valves
are valves that have threaded metal inserts in the bolt holes that
allow a system to use two sets of bolts without nuts. Lug valves
are installed between two flanges and are used to disconnect one
side of the piping system without distributing the other.
Plastic
butterfly valves
are cheap and offer higher flexibility than their metal counterparts.
With these benefits, a lower maximum pressure and temperature stability
are to be expected.
Stainless
steel butterfly valves are
the most common type of butterfly valves. Stainless steel is used
for its strength and anti-corrosive properties.
Wafer
butterfly valves
are installed between two flanges and are secured using bolts or nuts
and studs.
Butterfly Valves Terms
Actuator –
The part of a valve that converts electrical, fluid or thermal energy
into mechanical energy in order to open/close the valve.
Aeration – The process of mixing
air with a high content of oxygen into a liquid. Carburetor butterfly
valves go through aeration when mixing oxygen with fuel.
Backpressure – Force on the
upstream part of a butterfly valve or valve seat.
Bearing – A support typically
used in conjunction with butterfly valves to hold the revolving shaft
in its appropriate position.
Blind Flange – A solid plate-like
fitting used to seal a flanged end pipe’s end.
Bonnet – The part of a valve
that connects the body to the valve actuator. The bonnet sometimes includes
the stem packing.
Breakaway (Unseating) Torque –
The turning force required to rotate the closure element of a butterfly
or rotary valve.
Flange – The rim at the end
of a fitting, pipe or valve that allows for bolting onto an additional
pipe element.
Flow Meter– A device used to read and signify the flow rate of a material.
Flow Rate – The weight, mass
or volume of a gas, liquid or solid through a medium per unit of time.
Gate Valve – A valve similar
to a butterfly valve. Gate valves are not used in throttling applications
because they are either entirely open or entirely closed.
Inlet – Area of a valve through
which fluid enters.
Leakage – The amount of fluid
that passes through a valve while it is in the off position. The most
common unit for measuring leakage is in volume/time.
Outlet – The opening in a valve
through which fluid exits.
Pounds per Square Inch (PSI) –
A unit of measurement that signifies the level of pressure of a liquid,
solid or gas in a valve system.
Recovery – The amount of pressure
in a flow stream that is reduced as a direct result of the design of the
control valve. Recovery is also described as the ratio of maximum downstream
pressure to upstream pressure.
Seating Torque – The value
of the turning force that is needed to close a valve.
Slip on Flange – A flange that
slides over the end of piping and is then welded in place.
Throttling – Regulation of flow
or current through a valve.
Trim – The inner parts of a
valve that are in contact with the flow stream.
Valve Body – The main part
of a valve that contains passages for the flowing material.
Variable Speed – Term for when
an actuator is able to provide a slower operating time over the entire
range of operation.
Vena Contracta – The area of
a valve at which the flow stream is the slowest, usually downstream of
the physical constriction.
