--- type: product schema_version: 1 stock_number: "74869-1" canonical_url: "https://www.artisantg.com/PLC/74869-1/MKS-Instruments-253B-20-40-1-Exhaust-Throttle-Valve" json_url: "https://www.artisantg.com/PLC/74869-1/MKS-Instruments-253B-20-40-1-Exhaust-Throttle-Valve.json" generated_at: "2026-11-07T00:28:13.551Z" last_updated: "2026-10-13T05:35:40.040-05:00" --- # MKS Instruments 253B-20-40-1 Exhaust Throttle Valve _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: MKS Instruments - Model: 253B-20-40-1 - Condition: Used and in Excellent Condition - Price: Quote only - Availability: Not in Stock - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 5 lb, estimated - Shipping dimensions: 12X9X6 in, estimated ## Categories - Industrial Systems Equipment > Control Systems and Components > Valves (primary) ## Details ### Configuration - Flange Type: ISO-KF - Flange Size: NW40 - Nominal Inside Diameter: 0.779 in. (20 mm) ## Images - - - -