Type S Slide on
Sentinel type
The Sentinel Type Anodes slide onto a steel rod and then screw into a brass plug.
The Sentinel Type Anodes slide onto a steel rod and then screw into a brass plug.
| Brass Plug Part Number | NPT Size | Internal Thread | Use with Element | Part Number | Plug NPT Size | Inside Diameter | Outside Diameter |
| SP-250 | 1/4" | 10 24 | S-438 | S-438 | 1/4" OR 3/8" | .1875" | .4375" |
| SP-375 | 3/8" | 10 24 | S-438 | S-500 | 1/2" | .1875" | .500" |
| SP-500 | 1/2" | 10 24 | S-500 | S-813 | 3/4" | .1875" | .8125" |
| SP-750 | 3/4" | 10 24 | S-813 | S-1000 | 1" | .1875" | 1.000" |
| SP-1000 | 1" | 10 24 | S-1000 | S-1500 | 1-1/2" | .375" | 1.500" |
| Stainless steel rods for sentinel anode | ||
| Part Number | Rod Size | Use With |
| SR-3 | 3/16" x 3" | S-438 - S-500 |
| SR-6 | 3/16" x 6" | S-813 - S-1000 |
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SR-6 Sentinel Stainless Steel Rod
Rotometals.com
$8.13The SR-6 is a 3/16" x 6" steel rod for sentinel type anodes.$8.13 -
SR-3 Sentinel Stainless Steel Rod
Rotometals.com
$6.09SR-3 is a 3/16" x 3" steel rod for use with sentinel type anodes.$6.09 -
SP-750 Sentinel Brass Plug 3/4" NPT
Rotometals.com
$12.47SP-750 3/4" NPT brass plug for sentinel type anode.$12.47 -
SP-500 Sentinel Brass Plug 1/2" NPT
Rotometals.com
$11.43SP-500 1/2" NPT brass plug for sentinel type anode.$11.43 -
SP-375 Sentinel Brass Plug 3/8" NPT
Rotometals.com
$10.39SP-375 3/8" brass plug for sentinel type anode.$10.39 -
SP-250 Sentinel Brass Plug 1/4" NPT
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$10.39SP-250 1/4" brass plug for sentinel type anode.$10.39 -
SP-1000 Sentinel Brass Plug 1" NPT
Rotometals.com
$16.63SP-1000 1" NPT brass plug for sentinel type anode.$16.63 -
S-813 Sentinel Zinc Disc Anode
Rotometals.com
$4.57Sentinel type slide onto a steel rod and then screw into a brass plug. Federal Stock Number: 5340-526-3656 Dimensions: 3/4" Plug NPT Size Brass Insert: .187in/4.8mm Diameter: .8125in/20.6mm Thickness: .500in ELEMENT Zn %...$4.57 -
S-500 Sentinel Zinc Disc Anode
Rotometals.com
$2.81Sentinel type slide onto a steel rod and then screw into a brass plug. Federal Stock Number: 5340-526-3664 Dimensions: 1/2" Plug NPT Size Brass Insert: .187in/4.8mm Diameter: .500in/12.7mm Thickness: .500in ELEMENT Zn %...$2.81 -
S-438 Sentinel Zinc Disc Anode
Rotometals.com
$2.66Sentinel type slide onto a steel rod and then screw into a brass plug. Federal Stock Number: 5340-526-3663 Dimensions: 1/4" or 3/8" Plug NPT Size Brass Insert: .187in/4.8mm Diameter: .4375in/11.1mm Thickness: ...$2.66 -
S-1500 Sentinel Zinc Disc - ZDT-77
Rotometals.com
$7.20Sentinel type slide onto a steel rod and then screw into a brass plug. Dimensions: 1-1/2" Plug NPT Size Brass Insert: .375in/9.5mm Diameter: 1.5in/38.1mm$7.20 -
S-1000 S Line Zinc Disc Anode
Rotometals.com
$6.12Sentinel type slide onto a steel rod and then screw into a brass plug. Federal Stock Number: 5340-526-3657 Dimensions: 1" Plug NPT Size Brass Insert: .187in/4.8mm Diameter: 1in/25.4mm ELEMENT Zn % BalanceFe % 0.001Cu % 0.001Cd...$6.12