6.6.3.5.3 For filling and discharge openings the first shut off device shall be an internal stop valve and the second shall be a stop valve placed in an accessible position on each discharge and filling pipe.

Civil Horizontal Valve

(releases air valve)

Cylinder head valve grinder

Cylinder head valve grinder

The external discharge fittings (pipe sockets, shut off devices), the stop valve and its seating shall be protected against the danger of being wrenched off by external forces (for example using shear sections).

Vehicle jack Cylinder head valve grinder

The external discharge fittings (pipe sockets, shut off devices), the internal stop valve and its seating shall be protected against the danger of being wrenched off by external forces (for example using shear sections).

This is called a cycle valve tube.

6.6.2.6.4 For a lined shell, the internal stop valve required by 6.6.2.6.3.1 may be replaced by an additional external stop valve.

And this is how you make a valve.

(v) the valve shall continue to be effective in the event of damage to the external device for controlling the operation of the valve

This is actually a heart valve, which we engineered.

(a) a self closing internal stop valve, that is a stop valve within the shell or within a welded flange or its companion flange, such that

6.6.3.5.2 All openings with a diameter of more than 1.5 mm in shells of portable tanks, except openings for pressure relief devices, inspection openings and closed bleed holes, shall be fitted with at least three mutually independent shut off devices in series, the first being an internal stop valve, excess flow valve or equivalent device, the second being an external stop valve and the third being a blank flange or equivalent device.

Does the color of the valve matter? What matters here?

(ii) the valve may be operable from above or below

Connections and accessories leading to or from such a valve shall have a capacity for a flow more than the rated flow of the excess flow valve.

Come on. Off, off, off, off, off, off.

This valve will be activated after orbital injection by a special command from the on board control system.

Now that's a left ventricle pushing blood up through the aortic valve you can see two of the leaflets of the aortic valve working there up into the ascending aorta.

And the way you engineer this heart valve is the same strategy.

What if a cylinder cracks, a valve stuck, a bearing burned out?

Even trips to the dentist require that you take antibiotics, in case you get an internal infection on the valve.

6.6.4.5.2 Each filling and discharge opening in portable tanks used for the transport of flammable refrigerated liquefied gases shall be fitted with at least three mutually independent shut off devices in series, the first being a stop valve situated as close as reasonably practicable to the jacket, the second being a stop valve and the third being a blank flange or equivalent device.

This is actually a heart valve that we've engineered, and you can see here, we have the structure of the heart valve and we've seeded that with cells, and then we exercise it.

It has a funny trilobal shape at the bottom, which contains the aortic valve.

Great and then I didn't hear from them for weeks, so I called, and I asked, What's going on with the heart valve?

(a) an external stop valve fitted as close to the shell as reasonably practicable and

(b) an external stop valve fitted as close to the shell as reasonably practicable and

(b) Each valve shall be of the packless type with non perforated diaphragm, except that, for corrosive materials, a valve may be of the packed type with an assembly made gas tight by means of a seal cap with gasket joint attached to the valve body or the pressure receptacle to prevent loss of material through or past the packing

For future launches of the Globalstar programme, an additional pyrotechnic valve will be installed on the upper part of the second stage oxidizer tank.

(iv) except for portable tanks having a capacity of not more than 1,000 litres, it shall be possible to close the valve from an accessible position of the portable tank that is remote from the valve itself and

This condition had apparently promoted more intensive oxygen evaporation, which subsequently saturated the standard safety valve.

Come on, get this off, you devils. Get it off. Get it off.

A study of history confirms the validity of the Big Hunt theory... it is mankind's safety valve.

On, more on and then off.

Snares on, snares off.

Come on, shove off!

Yeah, off and on.

Come on, we're off.

Go on! Bug off!

Go on, push off!

And the fact that pig heart valves have lots of these on them is the reason that you can't transplant a pig heart valve into a person easily.

(c) Each valve outlet shall be sealed by a threaded cap or threaded solid plug and inert gasket material