Click for larger image and other views

How can we improve our images or Product Specifications?

Linemaster 3B-30A2-S Compact Airval Foot Switch, 3-Way Pneumatic, Single Pedal, Momentary, Single Stage, No Guard, Black

Be the first to review this item


Specifications for this item
Number of Items
Color Name
Material Type
Part Number
Brand Name
Manufacturer Series Number
System of Measurement

This item is no longer available

This item ships for FREE with 2-Day Shipping on orders over $50. (Details)

Want it delivered on Wed, Apr 29? Order in-stock items in the next 18 hrs 15 mins and choose One-Day Shipping at checkout.

  • Share

This item has already been added to

Update Quantity Cancel

Select a List Create New List

You can add a description later

Key Features

  • Single-stage, momentary action 3-way pneumatic foot switch for use with medium-duty air-operated devices
  • Steel housing for strength and durability
  • Non-skid base for stability and safety with two bolt holes for mounting to floor or equipment
  • Non-ferrous Internal valve, stainless-steel plunger, and Teflon (PTFE)-coated nitrile rubber O-rings for durability and resistance to corrosion
  • Line pressure up to 150 psi maximum

Package Details

Shipping Weight: 0.45 pounds
Package Size: 3.2 x 2.8 x 1.3 inches

Product Description

This Linemaster 3B-30A2-S Compact Airval pneumatic foot switch has a steel housing, input and output ports, and a 3-way, corrosion-resistant internal air valve. This foot switch is suitable for use in applications in which users need hands-free, on-and-off power activation. It provides single-stage, momentary action for quick-release termination. Air flows through the foot switch when the plunger is depressed, stops flowing when the plunger is released, and exhausts back pressure on its output side. It has a steel housing for strength and durability and standard 1/8"-27 National Pipe Taper (NPT) input and output ports. The 3-way internal valve has a non-ferrous body, a stainless-steel plunger, and Teflon (PTFE, polytetrafluoroethylene)-coated nitrile rubber O-rings for durability and resistance to corrosion. The non-skid base gives the foot switch stability to help prevent sliding on smooth floors, and has bolt holes for mounting to the floor or equipment. This foot switch is compliant with the Restriction of Hazardous Substances (RoHS) directive. A filtered and lubricated air supply is required for best operation. A heavy gauge steel guard is available for this product (contact manufacturer). This momentary action air-operated foot switch is suitable for medium-duty operations in the food equipment, woodworking, metalworking, textile, stamping, and printing industries, among other applications.


Input and output portsNPT 1/8"-27
Mounting2 bolt holes
Air flow30 CFM at 100 psi
Exhaust flow25 CFM
Operating force7 lb.
Maximum line pressure150 psi
Operating temperature0 to 131 degrees F
Unit weight0.5 lb.
Dimensions1.28 x 2.74 x 2.88" (H x W x D)

*H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Foot switches are used to turn on and off electrical devices and may also provide control over the device's speed and mode of operation. They come with up to three pedals and can have a maintained, momentary, variable, or anti-trip switch action. For maintained action switches, one press of the pedal controls the power, whereas momentary action switches require constant pressure on the pedal for power. Variable action switches (also called foot potentiometers) function similarly to momentary action switches, but also provide control over the connected device's operating speed. Anti-trip action switches require users to release a safety latch before pressing down for momentary action. Foot switches vary in their contact specifications, amp ratings, plugs and receptacles, and material construction to suit different applications, device amperages, plug configurations, and environments. Foot switches are commonly used with power tools, sewing machines, musical instruments, dental equipment, and lighting, and in the construction, laboratory, production, and medical fields, among others.

Linemaster Switch Company manufactures electromechanical, pneumatic, digital, linear Hall effect, and wireless foot switches for use in the industrial, medical, computer, and musical fields, among others. The company, founded in1952, is headquartered in Woodstock, Connecticut, and meets International Organization for Standardization (ISO) 2001:2008 and ISO 13485:2003 standards.

How can we improve our Product Description?

Customer Reviews

There are no customer reviews yet.

Be the first to review this item

Go to the HomePage

Order by Phone
M-F 8am-10pm ET, Sat-Sun 8am-5pm ET 800-220-4242

My Account| Returns| Help

Website Feedback| Contact Us| Sell on AmazonSupply| Become an Affiliate

Privacy Notice| Conditions of Use

Follow Us 

© 2015, Inc. and its affiliates.