HEW PRESSURE SWITCH FOR HIGHLY CORROSIVE MEDIA Threaded (adjustable) Construction Shown; Welded construction optional
POINTERS to PROFITABLE SCALING
SCHAFFER POIDOMETER PROPORTIONS · BLENDS ·
RECORDS · WEIGHS MIXES · FEEDS
HIGH-SPEED
ACCURATE
AUTOMATIC
DURABLE
Snap action Switch
The experience of bulk material handlers everywhere points out the advantages of this all 'round scaling machine.
Overtravel protection
It's easy to install and operate . . . durably-built for long, reliable service under all working conditions . . . promotes product uniformity and continuous output.
Welded multiple diaphragm sensing element —not to be confused with an accordion
Poidometers are available with total weight recorders, and remote control devices for showing and changing feed rate.
OVER 1500
WRITE FOR
bellows.
NOW SERVING INDUSTRY
CATALOG NO. 3-A.
Vu" internal pipe thread pressure connector is standard—Welding fitting optional.
SCHAFFER POIDOMETER CO.
SAVE EXPENSE OF CHEMICAL MORE THAN
The Poidometer provides the latest type of equipment for supplying valuable weight-data with speed, precision and economy.
PROTECTORS...OFTEN
THE PRICE OF THE PRESSURE SWITCH
This new tier-tube line of Meletron pressure switches is available in materials suitable for use with concentrated hydrogen peroxide, fuming nitric acid, liquid oxygen, proprietary amine fuels, fluorine, mixtures of fluorine and liquid oxygen and others. Proof pressures range from 224 to 6000 P.S.I., pressure settings from 2 to 4800 P.S.I. Switches will operate in temperatures from —65° to + 2 7 5 ° F. Standard pres sure port fitting is VA " internal pipe thread but may be substituted by special welding fitting. The housing serves as a pressure tight safety capsule in case of a break in the sensing element. Single pole double throw switching elements are rated to 10 amps., for AC and DC circuits. Free leads or Cannon plug are optional for electrical connection. As an added safeguard, the stainless steel models will withstand 2000° heat for five minutes. Write for bulletins 1110 to 11 70.
Ν ο. 5
2828 Smallman St. Pittsburgh 2 2 , Pa.
of the
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Proi ?ress in
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PRISSURi SWITCH DIVISION
5 1 2 5 ALCOA AVENUE 134
A
barksdale valves LOS ANGELES 58
INDUSTRIAL AND ENGINEERING CHEMISTRY
CALIFORNIA
393 pages
cloth bound
$6.50
A merican C h e m i c a l S o c i e t y Special Issue Sales 1 1 5 5 Sixteenth St., N . W . W a s h i n g t o n 6 , D. C.
