HHT NG IPI Valve No Turndown Part # 593-500 Replacement natural gas (NG) Dexen valve for Hearth & Home gas stoves and fireplaces. This is an IPI valve, does not work with DSI, HSI or standing pilot units. Fits the following HHT gas fireplace models: Heatilator Gas Fireplaces: AZTEC BCBR36 BCBV36I BRAVO EDV3633I & EDV3633IL EHS3633I GGBR60E & GGBR60LE GGBR60I & GGBR60IL GGBR80E & GGBR80LE GGBR80I & GGBR80IL GNBC30E & GNBC30LE - After 18/02 GNBC33E & GNBC33LE - After 18/02 GNBC36E & GNBC36LE - After 18/02 GNDC30E & GNDC30LE - After 18/02 GNDC33E & GNDC33LE - After 18/02 GNDC36E & GNDC36LE - After 18/02 GNRC33E & GNRC33LE - After 18/02 GNRC36E & GNRC36LE - After 18/02 RAVE3012I RAVE4013i RAVE4013i-C RBV4236IT & RBV4236IH RBV4842IT & RBV4842IH CFL-24NG-IPI FI36M & FI36ML FI42M & FI42ML GO24-IPI-NG GO30-IPI-NG GO33-IPI-NG GO35-IPI-NG GO40-IPI-NG GO318-IPI-NG GO324-IPI-NG GO330-IPI-NG ODGO324-IPI-NG DAKOTA42H & DAKOTA42 DAKOTA42-B & DAKOTA42H-B STIO-TWILIGHT TWILIGHT TWILIGHT-II TWILIGHT-II-B TWILIGHT-II-MOD Heat & Glo Gas Fireplaces: GATEWAY Solaris36-MR Solaris36-ST BCBV36I BRAVO CFX-CRESCENT - After serial # 002182991 CFX-DA CFX-DIAMOND GRAND-50-D INFINITY OLYMPUS RBV4236IT & RBV4236IH RBV4842IT & RBV4842IH SLR32 SLR (COSMO) SLR-B (COSMO) SLR-C (COSMO) SOHO24B BE-36-CIPI SL-550BE-IPI SL-550BE-M-IPI SL-550METRO SLF-550TR-IPI-E CFL-24NG-IPI GO24-IPI-NG GO30-IPI-NG GO33-IPI-NG GO35-IPI-NG GO40-IPI-NG GO318-IPI-NG GO324-IPI-NG GO330-IPI-NG ODGO324-IPI-NG Heat & Glo part # 593-500 OEM HHT part. May fit other models, check your owners manual for part numbers.