A821204 is listed in DICSA's technical catalogue under DNP Quick-release couplings / Quick release couplings / NPT Quick release couplings NV1 serie.
Match both coupling halves by interface and series, then check the fluid and operating conditions stated in the technical documentation.
Source specifications: Material: Mild Steel.
Use the catalogue drawing and exact part reference to check connection geometry, hose or tube compatibility, and installation requirements.
