UMBILICAL CORD 65 



b. End Fittings . A two-way sliut-off quick-connecting fitting shall be installed on each 

 end of the hose. The fittings shall be l/4-in. Roylyn Incorporated Series 1300, or equal. Ma- 

 terial may be brass or corrosion-resistant steel. 



The Sealab end shall have a nipple-type fitting. 



The support vessel end shall have a coupling-type fitting. 



A cap or plug shall be provided for each end of the hose and secured to the hose with a 

 chain or small stainless steel cable. The cap and plug should be of the same material as the 

 end fitting; however, aluminum may be used with corrosion-resistant steel fittings. 



c. Cleaning . Upon completion of the installation of the end fittings, the hose shall be thor- 

 oughly cleaned for oxygen service. The cap and plug shall be installed to prevent the interior 

 from becoming contaminated during handling. 



4. Gas Supply 



a. Hose . The gas supply hose shall be 3/4-in.I.D. x 1-1/4-in. O.D. with a minimum work- 

 ing pressure of 400 psig and shall be Weatherhead H- 16 or equal. The hose shall be in one 

 continuous length. 



b. End Fittings . A two-way shut-off quick-connecting fitting shall be installed on each end 

 of the hose. The fittings shall be 3/4-in. Roylyn Incorporated Series 1300 or equal. Material 

 may be brass or corrosion-resistant steel. 



The Sealab end shall have a coupling type fitting. 



The support-vessel end shall have a coupling type fitting. 



A plug shall be provided for each end of the hose and secured to the hose with a chain 

 or small stainless steel cable. The plugs should be of the same material as the end fitting; 

 however, aluminum may be used with corrosion-resistant steel fittings. 



c. Cleaning . Upon completion of the installation of the end fittings, the hose shall be thor- 

 oughly cleaned for helium and breathing air service. The plugs shall be installed to prevent 

 the interior from becoming contaminated during handling. 



d. Color Coding . Both ends of the hose shall be color coded to distinguish the gas-supply 

 hose from the air-supply hose. The connection on Sealab shall also be color coded. 



5. Air Supply 



a. Hose . The air-supply hose shall be 3/4-in. I.D. x 1-1/4-in. O.D. with a minimum work- 

 ing pressure of 400 psig and shall be Weatherhead H-16 or equal. The hose shall be in one 

 continuous length. 



b. End Fittings . A two-way shut-off quick-connecting fitting shall be installed on each 

 end of the hose. The fittings shall be 3/4-in. Roylyn Incorporated Series 1300 or equal. Mate- 

 rial may be brass or corrosion-resistant steel. 



The Sealab end shall have a nipple -type fitting. 



The support vessel end shall have a nipple -type fitting. 



A cap shall be provided for each end of the hose and secured to the hose with a chain 

 or stainless steel cable. The caps should be of the same material as the end fitting; however, 

 aluminum may be used with corrosion-resistant steel fittings. 



c. Cleaning . Upon completion of the installation of end fittings, the hose shall be cleaned 

 by purging with compressed air to remove any foreign particles from the interior of the hose. 

 The caps shall be installed upon completion of cleaning. 



