SMC ASN2-A Exhaust Throttle Valve with Silencer (Resin Body)

SMC ASN2-A exhaust throttle valve with built-in silencer, screwed into the valve exhaust port to control cylinder speed and reduce exhaust noise.

Key features

Throttle valve and silencer in one: fewer parts and assembly steps
Resin body up to 80% lighter than the conventional metal ASN2 (7.6 g vs 34 g, 1/4 size)
Push-lock knob or compact indicator type (S) with vernier for numeric flow setting in 1/4 turn steps
Noise reduction 20 dB or more at max. flow
Speed adjustable at the valve side when the cylinder is out of reach
NPT thread (N) available for 1/8 to 1/2

Specifications

Fluid	Air
Proof pressure	1.5 MPa
Operating pressure range	0 to 1 MPa
Ambient and fluid temperature	-5 to 60°C (no freezing)
Critical pressure ratio b	0.15 (M5, U10/32), 0.35 (1/8 to 1/2)
Needle turns	8 (M5, U10/32), 10 (1/8 to 1/2)
Source	SMC Korea catalog (SMCKR_ASN2-A.pdf), CAT.KS20-321A, p. 1-2 (PDF p. 1-2)

ASN2-M5A		Knob: Push-lock \| Port size: M5x0.8 \| C value: 0.36 dm3/(s·bar) \| Weight: 1.5 g
ASN2-U10/32A		Knob: Push-lock \| Port size: 10-32UNF \| C value: 0.36 dm3/(s·bar) \| Weight: 1.5 g
ASN2-01A		Knob: Push-lock \| Port size: R1/8 \| C value: 0.72 dm3/(s·bar) \| Weight: 4.3 g
ASN2-02A		Knob: Push-lock \| Port size: R1/4 \| C value: 1.3 dm3/(s·bar) \| Weight: 7.6 g
ASN2-03A		Knob: Push-lock \| Port size: R3/8 \| C value: 3.32 dm3/(s·bar) \| Weight: 12.8 g
ASN2-04A		Knob: Push-lock \| Port size: R1/2 \| C value: 4.9 dm3/(s·bar) \| Weight: 24.0 g
ASN2S-M5A		Knob: With compact indicator \| Port size: M5x0.8 \| C value: 0.36 dm3/(s·bar) \| Weight: 2.1 g
ASN2S-U10/32A		Knob: With compact indicator \| Port size: 10-32UNF \| C value: 0.36 dm3/(s·bar) \| Weight: 2.1 g
ASN2S-01A		Knob: With compact indicator \| Port size: R1/8 \| C value: 0.72 dm3/(s·bar) \| Weight: 5.4 g
ASN2S-02A		Knob: With compact indicator \| Port size: R1/4 \| C value: 1.3 dm3/(s·bar) \| Weight: 9.1 g
ASN2S-03A		Knob: With compact indicator \| Port size: R3/8 \| C value: 3.32 dm3/(s·bar) \| Weight: 15.0 g
ASN2S-04A		Knob: With compact indicator \| Port size: R1/2 \| C value: 4.9 dm3/(s·bar) \| Weight: 26.8 g

SilencersSMC

12 product codes available in this family

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SMC ASN2-A Exhaust Throttle Valve with Silencer (Resin Body)

Brand SMC·Silencers

Available part numbers (12)

ASN2-M5A, ASN2-U10/32A, ASN2-01A, ASN2-02A, ASN2-03A, ASN2-04A, ASN2S-M5A, ASN2S-U10/32A, ASN2S-01A, ASN2S-02A + 2 more — see full table ↓

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SMC ASN2-A Exhaust Throttle Valve with Silencer (Resin Body)