68 Results
Filters 5
Popularity Product Name Mfg. Part Number Order Number

OEM, Firomatic, Oil Heat Controls, Controls, HVACR Parts

Fusible Valve L41-891
Fusible Valve
Model #: B-105-F; Inlet Conn.: 3/8" Flare; Outlet Conn.: 3/8" Flare; Type: Brass Globe;
Brand: Firomatic Mfg #: 12840
Catalog Pg.: 470 View Similar Items
Check Valve L41-904
Check Valve
Model #: B105-HCV; Inlet Conn.: 3/8" Flare; Outlet Conn.: 3/8" Flare; Type: Brass;
Brand: Firomatic Mfg #: 12420
Catalog Pg.: 472 View Similar Items
Vent Cap L41-952
Vent Cap
Description: Cast Iron Mushroom Style; Conn. Size: 2" NPT;
Brand: OEM Mfg #: 4025
Catalog Pg.: 470 View Similar Items
Check Valve L41-903
Check Valve
Model #: B100-HCV; Inlet Conn.: 3/8" NPT; Outlet Conn.: 3/8" NPT; Type: Brass;
Brand: Firomatic Mfg #: 12410
Catalog Pg.: 472 View Similar Items
Duplex Tank Bushing L41-936
Duplex Tank Bushing
Description: 3-Way Tap (Union); Conn. Size: 2" NPT x 3/8" x 3/8";
Brand: OEM Mfg #: 4447
Catalog Pg.: 469 View Similar Items
Double Tapped Bushing L41-939
Double Tapped Bushing
Conn. Size: 1-1/4" x 3/4" (Hex Outside);
Brand: OEM Mfg #: 4569
Catalog Pg.: 469 View Similar Items
Fusible Valve L41-890
Fusible Valve
Model #: B-100-F; Inlet Conn.: 3/8" NPT; Outlet Conn.: 3/8" NPT; Type: Brass Globe;
Brand: Firomatic Mfg #: 12810
Catalog Pg.: 470 View Similar Items
Fusible Valve L41-893
Fusible Valve
Model #: B-205-F; Inlet Conn.: 1/2" Flare; Outlet Conn.: 1/2" Flare; Type: Brass Globe;
Brand: Firomatic Mfg #: 12850
Catalog Pg.: 470 View Similar Items
Duplex Tank Bushing L41-935
Duplex Tank Bushing
Description: 3-Way Tap (Union); Conn. Size: 1-1/2" NPT x 3/8" x 3/8";
Brand: OEM Mfg #: 4446
Catalog Pg.: 469 View Similar Items
Vent Cap L41-953
Vent Cap
Description: Steel Slip-on Style; Conn. Size: 1-1/4";
Brand: OEM Mfg #: 4037
Catalog Pg.: 470 View Similar Items
Duplex Tank Bushing L41-933
Duplex Tank Bushing
Description: 4-Way Tap; Conn. Size: 2" NPT x 3/8" x 3/8";
Brand: OEM Mfg #: 4475
Catalog Pg.: 469 View Similar Items
Fusible Valve L43-756
Fusible Valve
Model #: B-104-CF; Inlet Conn.: 3/8" Flare; Outlet Conn.: 1/4" NPT; Type: Brass Angle w/ 1-5/8" Shank;
Brand: Firomatic Mfg #: 12930
Catalog Pg.: 470 View Similar Items
Thermal Switch L41-916
Thermal Switch
Model #: TS-300B; Description: For 4" Square Junction Boxes;
Brand: Firomatic Mfg #: 12501
Catalog Pg.: 470 View Similar Items
King Leakproof Tank Gauge L87-325
King Leakproof Tank Gauge
Application: Vertical; Conn. Size: 1-1/2" & 2" NPT (Male);
Brand: OEM Mfg #: 4504
Catalog Pg.: 468 View Similar Items
Speedfill Cas and Connector L41-922
Speedfill Cas and Connector
Description: Cap;
Brand: OEM Mfg #: 3100
Catalog Pg.: 469 View Similar Items
Tank Valve L41-898
Tank Valve
Model #: 141-TF; Inlet Conn.: 1/2" NPT; Outlet Conn.: 3/8" NPT; Type: Fusible;
Brand: Firomatic Mfg #: 12640
Catalog Pg.: 471 View Similar Items
Speedfill Cas and Connector L41-930
Speedfill Cas and Connector
Description: 45 Degree Connector; Conn. Size: 2" Female NPT;
Brand: OEM Mfg #: 3420
Catalog Pg.: 469 View Similar Items
King Combination Fill Alarm and Gauge L87-322
King Combination Fill Alarm and Gauge
Conn. Size Bottom: 2" NPT (Male); Conn. Size Top: 1-1/2" NPT (Female);
Brand: OEM Mfg #: 4525
Catalog Pg.: 468 View Similar Items
Hinged Fill Cap L41-946
Hinged Fill Cap
Conn. Size: 2" Female NPT;
Brand: OEM Mfg #: 4171
Catalog Pg.: 469 View Similar Items
King Combination Fill Alarm and Gauge L87-323
King Combination Fill Alarm and Gauge
Conn. Size Bottom: 2" NPT (Male); Conn. Size Top: 2" NPT (Female);
Brand: OEM Mfg #: 4526
Catalog Pg.: 468 View Similar Items
Thermal Switch L41-915
Thermal Switch
Model #: TS-150B; Description: For 3-1/4" and 4" Round Junction Boxes;
Brand: Firomatic Mfg #: 12527
Catalog Pg.: 470 View Similar Items
Speedfill Cas and Connector L41-929
Speedfill Cas and Connector
Description: 45 Degree Connector; Conn. Size: 1-1/2" Female NPT;
Brand: OEM Mfg #: 3415
Catalog Pg.: 469 View Similar Items
Vent Cap L41-954
Vent Cap
Description: Steel Slip-on Style; Conn. Size: 1-1/2";
Brand: OEM Mfg #: 4038
Catalog Pg.: 470 View Similar Items
Duplex Tank Bushing L41-931
Duplex Tank Bushing
Description: 3-Way Tap; Conn. Size: 2" NPT x 3/8" x 3/8";
Brand: OEM Mfg #: 4468
Catalog Pg.: 469 View Similar Items
FTL Finance
Powered by Site Search powered by SLI Systems

© 2025 Johnstone Supply. All rights reserved.

Select products to compare.
Compare