Sampling device, by means of a tapered needle, pierces a sealed container while maintaining the seal and either evacuates or pressurizes the container. This device has many applications in the chemical, preservative and battery-manufacturing industries

Hennigan, T. J.

English

NASA Technical Reports Server

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December 1969	 Brief 69-10682 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Sealed Container Sampling Device 
Sampling Device in Operating Position 
The device described in this brief has a wide variety 
of applications in the chemical, preservative, and 
battery-manufacturing industries. 
The heart of the device is a precisely tapered needle 
valve that pierces a sealed container while maintaining 
the seal. The needle valve is capable of penetrating a 
variety of materials from plastics to 0.032 stainless 
steel. 
The sampling device can be used either to evacuate 
or pressurize the internal portion of the container.
The evacuation procedure is performed as follows: 
(refer to illustration) 
a. Clamp the container in place, positioned so 
that the needle valve will penetrate the container at 
the desired point. 
b. Connect a vacuum pump to the hose connection. 
c. Open shutoff valve and evacuate the manifold 
for a gage indication of 30 inches. 
d. Close shutoff valve and observe gage for a few 
minutes to ensure that there are no leaks. 
coil Lull tied oterleal 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately owned rights.
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e. Effect the container puncture by alternately 
advancing and backing the modified valve handle 
1/2-turn per cycle. The penetration is indicated by 
loss of vacuum. 
To obtain a sample from the container, remove the 
manifold top, insert a hypodermic needle through 
the membrane, fill the syringe then replace the mani-
fold top. 
To pressurize the container: 
a. Perform previously listed steps a through e. 
b. Disconnect the vacuum pump from the hose 
connection. 
c. Connect a cylinder of the desired gas to hose 
connection. 
d. Open shutoff valve and pressurize container 
to the desired pressure.
Notes: 
I. Standard safety precautions must be observed when 
using pressurizing procedures. 
2. The sampling device is fabricated of parts with 
standard pipe fittings. 
3. No additional documentation is available. Specific 
questions, however, may be directed to: 
Technology Utilization Officer 
Goddard Space Flight Center 
Greenbelt, Maryland 20771 
Reference: B69-10682 
Patent status: 
No patent action is contemplated by NASA. 
Source: Thomas J. Hennigan 
Head, Electrochemical Power Sources Section 
Goddard Space Flight Center 
(GSC- 10690)
E 
. 
Brief 69-10682
	 Category 03


Sealed container sampling device

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