Pneumatic Hand Control Switch Valves Plastic Air Hose Fitting Quick Joint Connector Ball Valve. Durable Material Construction: Stainless steel body and FKM seals ensure long service life in corrosive or wet environments. Manual Rotary Operation: Fully manual operation without electrical or pneumatic signals, ideal for maintenance and emergencies. Precise Interface Matching: Available in 8mm and 12mm interfaces to prevent air leakage and ensure secure installation. Wide Pressure Range: Supports pressure range of 0.15~0.7 MPa with working pressure up to 1MPA. Versatile Application: Suitable for grinding machinery, air compressors, and general pneumatic system control. OEM/ODM Support: Manufacturer offers OEM and ODM services with professional R&D and production capabilities.