Butterfly valve
A butterfly valve seen on the bore face: the lever swings a quarter turn and the disc rotates from edge-on and open to full-face and shut.
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Pipingsys
15 animationsCheck valve
A swing check disc hinged in the body lifts off its seat while forward flow passes, then drops shut the moment the line tries to run backwards.
CSSControl valve
A diaphragm-actuated control valve strokes its plug to a new demanded travel, the index on the yoke scale overshooting once before it settles on the stepped setpoint.
CSSDouble block and bleed
Two ball valves in series turn shut one after the other and the bleed branch between them opens, draining the trapped cavity down to the vent.
CSSExpansion loop
A U-loop in a run absorbs thermal growth: the approach legs lengthen inward from their anchors and the loop squeezes off its cold ghost outline, then relaxes.
CSSGate valve
A gate valve on a run: the rising stem winds the blade down through the bowtie body until it seats across the bore and the flow train through the line stops.
CSSHot tap tie-in
A tapping machine drives its cutter down through a saddle into a live header and retracts with the coupon, and the new branch starts to flow while the header never stops.
CSSInstrument loop
A field transmitter bubble sends its measurement along the signal lead to the controller bubble, which returns an output down to the final control element and nudges its stem.
CSSLine sizing
Three nominal line sizes stacked as a schedule: the selected bore steps up the stack and the accent flow area resizes to fill exactly the section it lands in.
CSSOrifice plate
An orifice plate with flange taps: the jet through the bore rises and falls and the two tap columns of the differential readout open and close against each other.
CSSRelief valve
A spring-loaded relief valve on a nozzle: the pressure column climbs to the set rule, the disc lifts and a relief stream leaves the outlet until blowdown reseats it.
CSSRupture disc
A domed rupture disc in its holder bulges under rising pressure, splits into two petals at the burst rating and vents the stack, then the cycle retraces.
CSSSpectacle blind
A spectacle blind swings half a turn in the flange gap so the solid spade takes the line position and the open ring lifts clear, cutting and restoring the flow.
CSSSteam trap
Condensate collects in a drip leg until the float rides high enough to open the trap, which discharges a slug to the return and drops the level back.
CSSY strainer
Debris builds as a wedge on the screen of a Y-strainer until the blowdown leg opens and flushes the load out, leaving the screen clear again.
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