Use a material that spreads out the pressure and has some give, such as inchwide plastic webbing, rubber hose, or inner tube sections.
This inner hose passes through the two valves and all the way down into your car's tank to "rain" the hydrogen.
Inside the tube, two spherical valves rotate 90 degrees; each of these balls has a hole drilled through it to permit the passage of a second, thinner, inner hose.
Made with a 6-ply construction and a reinforced cord, this is a power hose that has foam inner layers in order to maintain flexibility.
This hose is comprised of an inner polyester tube that is covered with stainless steel braid.
Each bellow is connected by a 4 mm inner diameter air hose in the base to a larger 13 mm inner diameter common tube through a valve.
These variables are: the flows of water at the inlet and outlet, represented respectively by the first and second addend, and the inner pressure of the hose, represented by the last addend of the equation.
The smoke flows from the smoker through a heat-resistant rubber heater hose (80 cm long, 2.7 cm inner diameter [ID], and 3.4 cm outer diameter [OD]; HBD/Thermoid, Bellefontaine, Ohio, USA) clamped to the spout of the smoker (Fig. 1-2,3).
If none of these areas are obstructed, the problem may be on the inner end of the hose.
If you don't have pipe insulating foam, a piece of rubber inner tube or garden hose will work.
The inner diameters of the tested hoses were 25, 40, 50 and 65 mm with a ratio of ridge depth to inner diameter (r/d) from 0.02 to 0.1 and a ratio of pitch to inner diameter (p/d) from 0.06 to 0.3.
