enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Hose coupling - Wikipedia

   en.wikipedia.org/wiki/Hose_coupling

   Side view of a 1.5 to 2.5 inches (38 to 64 mm) adapter. National Hose thread (NH), also known as National Standard Thread (NST). It is the most common type of fire hose coupling used in the United States. The male and female straight (non-tapered) threads screw together and the connection is sealed with a gasket.

3. Concentric reducer - Wikipedia

   en.wikipedia.org/wiki/Concentric_reducer

   A concentric reducer is used to join pipe sections or tube sections on the same axis. [1] The concentric reducer is cone -shaped, and is used when there is a shift in diameter between pipes. [ 1 ] For example, when a 1" pipe transitions into a 3/4" pipe and the top or bottom of the pipe doesn't need to remain level. [ 2 ]

4. North American Fire Hose Coupler Incompatibilities - Wikipedia

   en.wikipedia.org/wiki/North_American_Fire_Hose...

   1-inch hose with 1-8 NH NFPA threads (NFPA 1963 requirement; a.k.a. "Chemical Hose Thread" and "Booster Hose Thread" [7]; the chemical hose thread term likely originates from its use on chemical fire engines, an early firefighting device used from 1872 until the 1930s that used a combination of bicarbonate of soda and sulfuric acid to force ...

5. Common Berthing Mechanism - Wikipedia

   en.wikipedia.org/wiki/Common_Berthing_Mechanism

   The Z1 PCBM ring (1) before installation in 1998. Viewed here from the PE side, the silicone (2) and fluorocarbon (3) O-rings are already installed under the inboard flange. The attachment bolt holes (4) are visible around the inboard flange, and indexing pins protrude to ensure that the seals compress uniformly as it is bolted into place. [6 ...

6. Vacuum tube - Wikipedia

   en.wikipedia.org/wiki/Vacuum_tube

   Later thermionic vacuum tubes, mostly miniature style, some with top cap connections for higher voltages. A vacuum tube, electron tube, [1] [2] [3] thermionic valve (British usage), or tube (North America) [4] is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.

7. Stainless steel - Wikipedia

   en.wikipedia.org/wiki/Stainless_steel

   Representative alloys include 17-4 PH (UNS S17400), 15-5 PH (UNS S15500), Custom 450 (UNS S45000) and Custom 465 (UNS S46500). Semi-austenitic precipitation hardenable stainless steels are initially austenitic in the solution annealed condition for ease of fabrication, but are subsequently transformed to martensite to provide higher strength ...