The ARP20/30/40 series is available with a back flow function that exhausts the air pressure in the outlet side reliably and quickly. 

This is a legacy product, and replaced byAS2200-N01

This is a legacy product, and replaced byAKM3000-N01

This is a legacy product. Please contact us for the latest version.sales@ocaire.com, ARP 1/8 INCH CLEAN-ROOM, AIRLINE EQUIPMENT, ARP PRECISION REGULATOR, C5, ARP 1/8 INCH CLEAN-ROOM, 0.88184 lb

This is a legacy product, and replaced byIRV10-N01-X3

This is a legacy product, and replaced byIS10-N01-LP

This is a legacy product, and replaced byGD40-P2-N01

This is a legacy product, and replaced byASN2-N01-S

This is a legacy product, and replaced byAS2000-N01-3

This is a legacy product, and replaced byAS2200-N01-ST

This is a legacy product, and replaced byAS2201FG-N01-07S

This is a legacy product, and replaced byAS2211F-N01-03S

Size: 20, Backflow Function: None, Thread: F (G), Port Size: 01 (1/8)

Size: 20, Backflow Function: None, Thread: F (G), Port Size: 02 (1/4), Accessory: E (Square Embedded Pressure Gauge w/Limit Indicator), Specifications: 1 (0.005 to 0.2 MPa Setting)

Size: 20, Backflow Function: None, Thread: Rc, Port Size: 01 (1/8), Accessory: EH (E+H)

Size: 20, Backflow Function: None, Thread: Rc, Port Size: 01 (1/8), Accessory: G (Round Pressure Gauge w/Limit Indicator)

Size: 20, Backflow Function: None, Thread: Rc, Port Size: 01 (1/8), Accessory: GH (G+H)

Size: 20, Backflow Function: None, Thread: Rc, Port Size: 02 (1/4), Accessory: E (Square Embedded Pressure Gauge w/Limit Indicator)

Size: 20, Backflow Function: None, Thread: Rc, Port Size: 02 (1/4), Accessory: GH (G+H)

Size: 20, Backflow Function: None, Thread: Rc, Port Size: 01 (1/8), Accessory: H (Set Nut for Panel Mount)