Crouzet · Pneumatics

Crouzet Pneumatic Products

Name: Crouzet Pneumatic Products
Brand: Crouzet

Position detectors, logic elements, timers, pressure switches and solenoid valves for compressed-air automation that requires no electrical supply.

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Technical Documents

Pneumatic Products Catalogue (PDF) Pneumatic Components Selection Guide (PDF)

Key Features

100% pneumatic components for simple automation systems running on compressed air, without an electrical supply
A wide product range comprising position detectors, logic elements, timers, memory modules, pressure/vacuum switches and solenoid valves
ATEX-compliant versions of most components for explosive atmospheres
Modular logic system: elements are fitted on DIN rail, panel or shaft-type mounting sub-bases
2–8 bar operating pressure and −5 … +50 °C operating temperature on logic elements
Ø 4 mm push-in fittings for semi-rigid tubing
Mechanical life of more than 10⁷ cycles on logic elements

Sensors and Switches

Series	Product / Function	Operating Pressure	Flow Rate (6 bar)	Connection	Operating Force
81 280	“Microvalve” series 3/2 position detector (limit valve), horizontal outlet, plunger; NO or NC	2–8 bar	200 Nl/min	Ø 4 mm push-in fitting	15 N
81 281	“Microvalve” series 3/2 position detector, vertical outlet; plunger, short lever, ball, roller or one-way roller	2–8 bar	200 Nl/min	Ø 4 mm push-in fitting	15 N
81 502	Sub-base mounted module with pneumatic output: adjustable pressure/vacuum switch (negative output), signal amplifier and leak sensor relay (positive output)	2–8 bar	170 Nl/min (pressure and vacuum switch)	Via the mounting sub-base	—
81 505	Sub-base mounted module with pneumatic output: adjustable pressure/vacuum switch (positive output), signal amplifier and leak sensor relay (negative output)	2–8 bar	170 Nl/min (pressure and vacuum switch)	Via the mounting sub-base	—
81 512	Low-force position detector with threaded body, used with the relay module; ball or whisker	Supplied from the relay module	—	Ø 4 mm push-in fitting	0.8 N (ball) / 0.025 N (whisker)
89 543	3/2 valve with contact block for Ø 22 mm manual control units; NO or NC, single or as a kit with adaptor (NC + NO, NC + NC)	0–8 bar	112 Nl/min	Ø 4 mm push-in fitting or G 1/8	12.6 N
81 737	“Microvalve” series 3/2 position detector with Ø 16 mm threaded body and plunger; NC	2–8 bar	200 Nl/min	Ø 4 mm push-in fitting	25 N
81 921	“Miniature” series all-metal 3/2 position detector; plunger, roller lever or one-way roller; NO or NC	0.1–8 bar	200 Nl/min	Ø 4 mm or Ø 6 mm push-in fitting	18 N (adjustable-stop type 81 921 505: 21 N)
81 922	“Compact” series all-metal 3/2 position detector; roller plunger or rotary head; NC	0.1–8 bar	200 Nl/min	Ø 4 mm push-in fitting or G 1/8	2.5 daN
81 923	“Adjustable stop” series 3/2 position detector with threaded body and plunger; NC	0.1–8 bar	130 Nl/min	Barbed fitting for 2.7 × 4 mm tubing	16 N

Air Flow Elements

Series	Product / Function	Flow Rate	Orifice Diameter	Operating Pressure	Connection
81 525	Unidirectional adjustable flow restrictor (air flow regulator)	30 Nl/min (free flow)	0–0.5 mm	1–8 bar	Sub-base mounting
81 526	Unidirectional adjustable flow restrictor (air flow regulator)	200 Nl/min (free flow)	0–1.7 mm	1–8 bar	Sub-base mounting
81 527	Mini pressure regulator; output pressure adjustable 0.1–8 bar	200 Nl/min (6 bar)	—	2–8 bar	Sub-base mounting
81 529	Fixed-orifice air flow regulator (restrictor); 81 529 901: check valve	0.08–2.80 Nm³/h (4 bar, depending on orifice); check valve: 200 Nl/min (6 bar)	Ø 0.25–1 mm	1–8 bar (check valve: 2–8 bar)	Ø 4 mm push-in fitting

Mounting Sub-bases

Series	Product / Function	Mounting	Connection	Operating Temperature
81 531	Rear-connection mounting sub-base (for up to two elements)	Clip-on to Ø 8 mm shaft	Ø 4 mm push-in fitting	−5 … +50 °C
81 532	Single / end sub-base (81 532 104), stackable sub-base (81 532 102) and rear-connection panel sub-base (81 532 001)	35 mm DIN rail or panel with 2 × M4 screws	Ø 4 mm push-in fitting (swivel on DIN rail type)	−5 … +50 °C
81 536	Supply manifold with 13 outlets	On Ø 8 mm shaft	13 × Ø 4 mm outlets, Ø 8 mm inlet (push-in fitting)	−5 … +50 °C

Pneumatic Timers

Series	Product / Function	Time / Frequency Range	Operating Pressure	Flow Rate (6 bar)	Mounting
79 451	Time setting knob (panel-mount accessory for timers)	Models for 0.1–15 s and 0.1–30 s timers, pulse and frequency generators	—	—	Panel (Ø 10.5 mm hole)
81 503	Positive-output (on-delay) timer	0.4 s fixed; 0.1–15 s, 0.1–30 s or 0.1–60 s adjustable	2–8 bar	170 Nl/min	Sub-base mounting
81 506	Negative-output timer; frequency generator	Adjustable 0.1–15 s, 0.1–30 s or 0.1–60 s; 0.02–8 Hz or 0.02–14 Hz	2–8 bar	170 Nl/min	Sub-base mounting
81 507	Pulse generator	0.4 s fixed or 0.1–30 s adjustable	2–8 bar	170 Nl/min	Sub-base mounting

Memory Modules

Series	Product / Function	Operating Pressure	Flow Rate (6 bar)	Min. Pilot Pressure	Mounting / Connection
81 523	Bistable memory element (4/2 valve function) with pressure indicator; manual override option	2–8 bar	200 Nl/min	2.5 bar	On 81 542 sub-base
81 542	Memory element mounting sub-base (for 81 523)	—	—	—	35 mm DIN rail; Ø 4 mm swivel push-in fitting

Pressure Sensing

Series	Product / Function	Switching Pressure	Electrical Output	Connection / Mounting	Protection Class
81 509	Pressure switch with electrical output (fixed threshold); manual override option	Switch-on 1.4 ± 0.5 bar; release 0.6 ± 0.2 bar	Micro switch contact, 5 A / 220–230 V	Via the mounting sub-base	IP54
81 513	Adjustable pressure and vacuum switch with electrical output; manual override option	Pressure 2–8 bar; low pressure 0.3–1.2 bar; vacuum −0.3 … −0.8 bar (sub-base type −0.3 … −0.9 bar)	Micro switch contact, 5 A / 220–230 V	Ø 4 mm push-in fitting or 1/8 BSP; DIN rail, sub-base or panel mounting	IP20 (DIN rail type) / IP54

Valves with Contact Block

Series	Product / Function	Operating Pressure	Flow Rate (6 bar)	Connection	Actuating Force
89 543	3/2 valve with contact block for Ø 22 mm manual control units; NO or NC, single or as a kit with adaptor (NC + NO, NC + NC)	0–8 bar	112 Nl/min	Ø 4 mm push-in fitting or G 1/8	12.6 N

Pneumatic Proximity Sensors

Series	Product / Function	Sensing Distance	Supply Pressure	Min. Output Pressure	Connection
81 372	Air-barrier (gap) type pneumatic detector; no moving parts	18 mm (81 372 201) / 100 mm (81 372 401)	0.5–2.5 bar	5 mbar	Barbed fitting for 2.7 × 4 mm tubing

Solenoid Valves

Series	Product / Function	Operating Pressure	Flow Rate (6 bar)	Connection / Mounting	Supply Voltage
81 516	35 mm wide 4/2 valve module (monostable or bistable); pneumatic pilot, solenoid connector and blanking plate accessories	3.5–8 bar (monostable) / 2–8 bar (bistable)	300 Nl/min (Ø 4 mm sub-base) / 400 Nl/min (Ø 6 mm sub-base)	On 81 517 sub-base	—
81 517	Mounting sub-base for 35 mm valve modules (one 35 mm bistable 4/2 module or two 17.5 mm modules)	—	—	Ø 4 mm or Ø 6 mm push-in fitting; 35 mm DIN rail	—
81 519	Miniature 3/2 NC solenoid valve (15 × 15 mm CNOMO interface), manual override options; sub-base mounted 3/2 NC solenoid valve (81 519 7xx)	1–8 bar (sub-base mounted type: 2–8 bar)	12 Nl/min (AC) / 25 Nl/min (DC); sub-base mounted type 170 Nl/min	Sub-base or CNOMO interface; IP65 with connector 81 516 082	24 V DC (1 W); 24, 48, 110 or 220–230 V AC 50/60 Hz (2.5 VA)
81 537	Exhaust silencer	—	—	Ø 6 mm push-in	—

Logic Elements

Series	Product / Function	Operating Pressure	Flow Rate (6 bar)	Orifice Diameter	Connection
81 501	YES logic element; yellow	2–8 bar	170 Nl/min	2.7 mm	Sub-base mounting
81 503	Threshold YES logic element; orange	2–8 bar	170 Nl/min	2.7 mm	Sub-base mounting
81 504	NOT logic element; light grey	2–8 bar	170 Nl/min	2.7 mm	Sub-base mounting
81 506	Threshold NOT logic element; dark grey	2–8 bar	170 Nl/min	2.7 mm	Sub-base mounting
81 521	OR logic element; blue	2–8 bar	170 Nl/min	2.7 mm	Sub-base mounting
81 522	AND logic element; green	2–8 bar	170 Nl/min	2.7 mm	Sub-base mounting
81 540	OR logic element, in-line type; blue	2–8 bar	170 Nl/min (Ø 4 mm) / 200 Nl/min (Ø 6 mm)	2.7 mm / 4 mm	Ø 4 mm or Ø 6 mm push-in fitting
81 541	AND logic element, in-line type; green	2–8 bar	150 Nl/min (Ø 4 mm) / 200 Nl/min (Ø 6 mm)	2.7 mm / 4 mm	Ø 4 mm or Ø 6 mm push-in fitting