petcock
Small release valve
A petcock is a small valve for draining or releasing pressure from a tank, boiler, or pipe system.
The term combines "pet" (meaning small) with "cock" (a valve or tap).
Petcocks appear on radiators, fuel tanks, and plumbing fixtures: Turn the petcock to drain the water heater.
Also called a drain cock.
Valve for emptying tanks
- bibcockFaucet with bent outlet
- spigotLiquid flow controller
- tapValve controlling liquid flow
- needle valveTapered plunger flow restrictor
shutoff · bleed valve · drain valve · gate valve · plug · fuel valve
Lose vital fluid
- purgeEliminate unwanted elements
- drainChannel for wastewater
- emptyingRemoving all contents
- releaseTo let go
discharge · flow · outflow · evacuation · seepage · drip · siphon · water drainage
Heat transfer device
- carburetorEngine fuel-air mixer
- fuel tankContainer for combustible liquid
- coolant systemHeat-dispersing mechanical network
- motorcyclePowered two-wheeler
engine block · fuel line · reservoir · gravity feed · fuel filter · vintage car · lawn mower · generator
Suitable or proper
- pipeHollow conveyance channel
- threadFiber for stitching
- couplingJoint between systems
- brassCopper-zinc metal mixture
seal · washer · joint · outlet · boiler · steam radiator · heating system · water heater
draincock
Valve for emptying tanks
needle valve · shutoff · bleed valve · drain valve · gate valve · plug · fuel valve
bleed
Lose vital fluid
release · discharge · flow · outflow · evacuation · seepage · drip · siphon · water drainage
radiator
Heat transfer device
- carburetorEngine fuel-air mixer
- fuel tankContainer for combustible liquid
- coolant systemHeat-dispersing mechanical network
motorcycle · engine block · fuel line · reservoir · gravity feed · fuel filter · vintage car · lawn mower · generator
fitting
Suitable or proper
brass · seal · washer · joint · outlet · boiler · steam radiator · heating system · water heater · pressure relief
- fuel systemsfuel pump, fuel tank, fuel filter, fuel injector, fuel line
- valvesball valve, butterfly valve, gate valve, check valve, stop valve
- shutoffsshutoff valve, kill switch, cutoff switch, off switch, disconnect