Product | Rotarex

Spring type check valve for HP, UHP, cryogenic gases and fluids – CAR(S)

Specialty gas systems > Speciality gas equipment > Check valves

Spring type check valve for HP, UHP, cryogenic gases and fluids with cryogenic extension– CAR(S)

CAR(S) are check valves for UHP, HP and Cryogenic gases. The check valves benefit from a replaceable spring and plug. They are ideally suited for pure and ultra pure gases, combustible gases, oxidizing gases, toxic and corrosive gases, radioactive gases and noble gases.

Key advantages

100% Helium leak test performed on all valves
Individual serial number for full traceability
Electropolished surface roughness
100% degreased for Oxygen use
Cryogenic extension available

Contact an expert
Configure product
Download datasheet

CONSTRUCTION MATERIAL

	Parts	Material
Wetted parts	Body	SS 316L
	Seat	PCTFE or Vespel
	Head/body seal gasket	UNS N02201 (Nickel)
Non-wetted parts	Head	SS 316L

SURFACE FINISH

-	EP4	EP2
Ra 0.8 μm	Ra 0.4 μm EP	Ra 0.25 μm EP

All specifications subject to change without notice

SEAT DIAMETER /MAX WORKING PRESSURE / CRACKING PRESSURE

Valve	Seat diameter	Max. working pressure	Cracking pressure Δp
CAR 8	8mm	200 bar (1)	1.00 bar
CAR 12	12mm	200 bar (1)	0.70 bar
CAR 20	20mm	100 bar (1)	0.70 bar
CAR 32	32mm	100 bar (1)	0.35 bar
CAR 50	50mm	45 bar (1)	0.50 bar
CARS 20	20mm	10 bar (1)	0.70 bar

(1) for oxidizing gases (for example O2, NF3 etc.) Max. working pressure 30 bar

MANUAL DIMENSIONS

MAN.	CAR8	CAR12	CAR20	CARS20 (2)	CARS32	CARS50
ØB	48mm/(1.89")	70mm/(2.76")	70mm/(2.76")	69mm/(2.72")	108mm/(4.25")	135mm/(5.31")
ØE (up to)	22.5mm/(0.89")	31.5mm/(1.24")	38.5mm/(1.52")	34mm/(1.34")	52mm/(2.05")	77mm/(3.03")
He	45mm/(1.77")	75mm/(2.95")	83.5mm/(3.29")	420mm/(16.54")	104mm/(4.09")	128mm/(5.04")
L	90mm/(3.54")	140mm/(5.51")	140mm/(5.51")	140mm/(5.51")	180mm/(7.09")	250mm/(9.84")
N	45mm/(1.77")	70mm/(2.76")	75mm/(2.95")	65mm/(2.56")	110mm/(4.33")	150mm/(5.90")

(2) Minimal operation temperature -270° (3.15K)

Dimensions are for reference only and are subject to change without notice

Specifications

Fluid media	Standard, high and ultra high purity and corrosive gases or liquids
Max. working pressure	see table below
Pneumatic actuator operating pressure	-
Temperature range	77.15 K to 523.15 K (-196°C to +250°C)*
Flow capacity (cv)	-
Nominal seat diameter	see table below
Certified max. helium outboard leak rate (at max. pressure)	≤ 1.10-10 Pa.m3 .s-1
Certified max. helium across the seat leak rate (at max. pressure)	≤ 1.10-6 Pa.m3 .s-1*

Dimensional drawings

Product Configurator

	Size	Body material	Seat material	End-connection (1)	Surface finish	Options
CAR	08	I	/K	BWO	-	-
	Seat Ø8mm 08 Seat Ø12mm 12 Seat Ø20mm 20 Seat Ø32mm 32 Seat Ø50mm 50	SS316L I	PCTFE /K PI (Vespel®) /V	Butt welded orbital BWO Butt welded BW Socket welded SW Metal face seal - Male MV Metal face seal - Female FV	Ra 0.8µm - Ra 0.4µm (electropolished) EP4 Ra 0.25µm (electropolished) EP2	No option - Patte de fixation (2) FP

I am interested

(1) Size to be defined by customer and ROTAREX
(2) Minimal operating temperature -270° (3.15K )

Downloadable catalogs, brochures

Line Valves for UHP, Speciality and Cryogenic gases and fluids

Last update: Jan 25, 2023
Available in: en/FR/CN/KR