ABetterHigh VacuumStopcockfromAc
IMPROVED
LOWER
DESIGN A ^
All glass and Teflon - very easy to operate, can be annealed.
•
Suitable for use with oxygen and other corrosive gases.
A ™
Rugged design: may be used to at least 30 lbs. internal pressure.
PRICE!
8115 HIGH VACUUM STOPCOCK. Variable opening A: 0-5 mm. B: 0-10 mm. Smooth acting semi-needle valve permits fine adjustment of opening. " 0 " ring makes positive closure against a precision formed heavy glass seat. Reference marks on body and handle aid repetitive setting. The stem is made of long life Teflon and is triple sealed within heavy walled glass housing, accurately threaded. All glass construction permits annealing. Side arms are also of heavy walled glass. Supplied with plain side arms 120 mm. long. 8115-A (variable opening 0-5 mm.) $22.50, 8115-B (variable opening 0-10 mm.) $24.50.
Threaded Glass/Nylon Thermometer Adapters from Ace Convenient application
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Suitable for vacuum Wide range of sizes.
5028 ADAPTER, Thermometer Vacuum. Inner joint at bottom and threaded plastic bushing at top which tightens into glass piece to form an " 0 " ring compression seal with thermometer. Plastic bushing comes complete with Viton A " 0 " ring, f 10/30 size will accommodate thermometers up to 6.5 mm. diameter, and all others will accommodate 7 mm. diameter thermometers. Suitable for vacuum applications. Joint ï Glass Bottom Plastic Bushing Complete Threaded section
10/30 ï14/20 ï 19/22 124/40 ? 2.85 2.90 2.95 3.15 1.50 1.50 1.50 1.50 4.35 4.40 4.45 4.65 with tubing 4 " l o n g x y 2 " O.D. $1.50.
ACE
? 35/20 ? 35/25 3.40 3.40 1.50 1.50 4.90 4.90
GLASS I N C O R P O R A T E D Vineland, N e w
Louisville,
18/9 3.25 1.50 4.75
Ky.
Jersey Springfield,
Mass.
Circle No. 101 on Readers' Service Card VOL. 39, NO. 4, APRIL 1967
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71 A
