We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

APOLLO Expansion Tank Gauge: Stainless Steel, 5/8 in Gauge Glass Dia, 12 in Gauge Glass Lg - Tube-Style Sight Glasses for Expansion Tanks
APOLLOTube-Style Sight Glasses for Expansion Tanks

APOLLO Expansion Tank Gauge: Stainless Steel, 5/8 in Gauge Glass Dia, 12 in Gauge Glass Lg

The APOLLO Expansion Tank Gauge is a tube-style sight glass for expansion tanks, featuring a 5/8 in gauge glass diameter and 12 in gauge glass length with NPT connections. It includes a plug drain valve, PTFE with…

SKU 3G-OTH-91781

Brand
APOLLO
Item
Expansion Tank Gauge: Stainless Steel, 5/8 in Gauge Glass Dia, 12 in Gauge Glass Lg
Category
Tube-Style Sight Glasses for Expansion Tanks
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

APOLLO
Manufacturer Part Number
2365100
Type
NPT, TFE
Glass Lg
12 in Gauge
Glass Dia
5/8 in Gauge
Valve Type
Plug Drain
Gasket Material
PTFE with Hypalon
Stem Packing Material
TFE
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

APOLLO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APOLLO Expansion Tank Gauge is a tube-style sight glass for expansion tanks, featuring a 5/8 in gauge glass diameter and 12 in gauge glass length with NPT connections. It includes a plug drain valve, PTFE with Hypalon gasket material, and TFE stem packing material (MPN 2365100).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the APOLLO Expansion Tank Gauge used for?

The APOLLO Expansion Tank Gauge is a tube-style sight glass used to visually monitor fluid levels in expansion tanks within hydronic heating and industrial process systems. It helps operators detect low water or pressure issues without opening the system.

What are the specifications of the APOLLO Expansion Tank Gauge?

The APOLLO Expansion Tank Gauge (MPN 2365100) has a 5/8 in gauge glass diameter and 12 in gauge glass length with NPT connections. It features a plug drain valve, PTFE with Hypalon gasket material, and TFE stem packing material.

Where to buy the APOLLO Expansion Tank Gauge worldwide?

You can source the APOLLO Expansion Tank Gauge through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations, ensuring you receive the correct APOLLO part for your system.

How to install the APOLLO Expansion Tank Gauge?

Install the APOLLO Expansion Tank Gauge by applying thread sealant to the NPT connections and tightening securely. Ensure the gauge glass is vertical for accurate level reading. Open the plug drain valve slowly to purge air, then close it. Always follow system pressure guidelines.

Used in

Common applications for APOLLO
Water supply systems — APOLLO double check valve backflow preventers (Series 4A) for backflow protection in commercial buildings.
HVAC piping — APOLLO bronze ball valves (two-piece, FNPT) for shut-off and isolation in heating and cooling loops.
Irrigation networks — APOLLO double check valve assemblies (bronze, FNPT) to prevent contamination of potable water sources.
Process piping — APOLLO three-piece ball valves (full-port, sweat connections) for maintenance-friendly flow control in industrial lines.
Safety systems — APOLLO spring-return lever ball valves (bronze, FNPT) for fail-safe shut-off in fuel or gas applications.
Plumbing repairs — APOLLO repair kits (complete check kits) for servicing backflow preventers in existing installations.

APOLLO Products

3G Electric supplies APOLLO tube-style sight glasses for expansion tanks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from APOLLO

View all APOLLO parts
APOLLO Expansion Tank Gauge: Bronze, 5/8 in Gauge Glass Dia, 10 in Gauge Glass Lg, EPDM, 3/8 in NPT (MPN 2070300). Key specifications — Valve Type: Needle Drain; Brand: APOLLO; Gasket Material: EPDM.
APOLLO
APOLLO Expansion Tank Gauge: Bronze, 5/8 in Gauge Glass Dia, 10 in Gauge Glass Lg, EPDM, 3/8 in NPT (MPN 2070300). Key specifications — Valve Type: Needle Drain; Brand: APOLLO; Gasket Material: EPDM.
APOLLO Expansion Tank Gauge: Bronze, 5/8 in Gauge Glass Dia, 12 in Gauge Glass Lg, EPDM, 1/2 in NPT (MPN 2070400). Key specifications — Valve Type: Needle Drain; Brand: APOLLO; Gasket Material: EPDM.
APOLLO
APOLLO Expansion Tank Gauge: Bronze, 5/8 in Gauge Glass Dia, 12 in Gauge Glass Lg, EPDM, 1/2 in NPT (MPN 2070400). Key specifications — Valve Type: Needle Drain; Brand: APOLLO; Gasket Material: EPDM.