Brand: Fulilai Function object: fan Purpose: pressure regulating flow characteristics: quick-opening valve standard: national standard valve body type: straight-through single-seat specification: sfvd630L Applicable industry: architecture can be equipped with accessories: actuator sealing method: soft sealing flow direction: two-way temperature environment: low temperature action mode: double-acting function: air-type control mode: regulating valve function: pressure regulating type (channel position) : Two-way upper cover form: ordinary lining material: rubber lining drive mode: manual pressure environment: atmospheric pressure Applicable medium: air