R804 *Only use specific pneumatic devices. The only
pneumatic system items permitted on
A.
pneumatic pressure vent plug valves functionally equivalent to those
provided in the
Examples of acceptable valves include Parker PV609-2 or MV709-2.
B.
pressure relief valves functionally equivalent to those provided in the
Examples of acceptable valves include Norgren 16-004-011, 16-004-003 or McMaster-Carr 48435K714.
To be considered functionally equivalent the valve must be preset or adjustable to 125 psi (~862 kPA, 8.6 Bar) and capable of relieving at least 1 scfm (~472 cm3/s).
C. solenoid valves with a maximum ⅛ in. (nominal, ~3 mm) NPT, BSPP, or BSPT port diameter or integrated quick connect ¼ in. (nominal, ~6mm) outside diameter tubing connection,
D. additional pneumatic tubing, with a maximum ¼ in. (nominal, ~6 mm) outside diameter,
E.
pressure transducers, pressure gauges, passive flow control valves
(specifically “needle valve”), manifolds, and connecting fittings (including
F. check and quick exhaust valves, provided that the requirements of R813 are still met.
G. shutoff valves which relieve downstream pressure to atmosphere when closed (may also be known as 3-way or 3-way exhausting valves),
H. pressure regulators with the maximum outlet pressure adjusted to no more than 60 psi (~413 kPa, 4.1 Bar),
I. pneumatic cylinders, pneumatic linear actuators, and rotary actuators,
J. pneumatic storage tanks (with the exception of white Clippard tanks P/N AVT-PP-41),
K. 1 compressor that is compliant with R806,
L. debris or coalescing (water) filters, and
M. Venturi valves (note: the high-pressure side of a Venturi valve is considered a pneumatic device and must follow all pneumatic rules. The vacuum side of a Venturi valve is exempt from the pneumatic rules per “a” in the blue box below).
The following devices are not considered pneumatic devices and are not subject to pneumatic rules (though they must satisfy all other rules):
A. a device that creates a vacuum,
B. closed-loop
C. air-filled (pneumatic) wheels, and
D. pneumatic devices not used as part of a pneumatic system (i.e. used in a way that does not allow them to contain pressurized air)