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LDI INDUSTRIES Vented Oil Gauges: 6.23 in Body Ht, 4 1/4 in Sight Ht, 1/2" NPTF Female - Vented Oil Level Gauges
LDI INDUSTRIESVented Oil Level Gauges

LDI INDUSTRIES Vented Oil Gauges: 6.23 in Body Ht, 4 1/4 in Sight Ht, 1/2" NPTF Female

The LDI INDUSTRIES Vented Oil Gauge (SKU 1U596, MPN G421-4) is a vented oil level gauge with a 6.23 in body height and 4 1/4 in sight height. It features a 1/2" NPTF female connection, a Buna N seal, and a maximum…

SKU 3G-OTH-592820

Brand
LDI INDUSTRIES
Item
Vented Oil Gauges: 6.23 in Body Ht, 4 1/4 in Sight Ht, 1/2" NPTF Female
Category
Vented Oil Level Gauges
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Technical Specifications

LDI INDUSTRIES
Manufacturer Part Number
G421-4
Sight Ht
4 1/4 in
NPTF Female
1/2"
Seal Material
Buna N
Max. Temp Rating
250°F
Includes Thermometer
No Thermometer Included
Compatible with Series
G400 Series
View Full Spec Sheet

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

Product Description

The LDI INDUSTRIES Vented Oil Gauge (SKU 1U596, MPN G421-4) is a vented oil level gauge with a 6.23 in body height and 4 1/4 in sight height. It features a 1/2" NPTF female connection, a Buna N seal, and a maximum temperature rating of 250°F. This gauge is compatible with the G400 Series and does not include a thermometer.

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 a vented oil gauge used for?

A vented oil gauge provides a clear visual indication of oil level in reservoirs, gearboxes, and hydraulic tanks. The vent allows pressure equalization, preventing seal damage. LDI INDUSTRIES gauges like the G421-4 are common in industrial machinery, pumps, and compressors where reliable level monitoring is critical.

What are the specifications of the LDI INDUSTRIES G421-4 vented oil gauge?

The LDI INDUSTRIES G421-4 vented oil gauge has a 6.23 in body height, 4 1/4 in sight height, and a 1/2" NPTF female connection. It uses a Buna N seal, has a maximum temperature rating of 250°F, and is compatible with the G400 Series. No thermometer is included.

Where to buy LDI INDUSTRIES G421-4 vented oil gauge worldwide?

3G Electric supplies the LDI INDUSTRIES G421-4 vented oil gauge to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this gauge.

How to install a vented oil gauge like the G421-4?

Install the LDI INDUSTRIES G421-4 vented oil gauge into a 1/2" NPTF female port using thread sealant on the male threads. Tighten to manufacturer torque specs, ensuring the sight glass is vertical for accurate reading. The vent must remain unobstructed for proper pressure equalization.

Used in

Common applications for LDI INDUSTRIES
Hydraulic power units — LDI Industries pump motor adapters (e.g., MPN 6028) connect electric motors to hydraulic pumps in industrial machinery.
Mobile equipment — LDI Industries SAE B 4-bolt adapters (e.g., MPN 1952) used in construction vehicle hydraulic systems.
Gas engine-driven pumps — LDI Industries gas engine/pump adapter (MPN 6019) interfaces PEM-G flange engines with SAE A pumps.
Hydraulic tank fabrication — LDI Industries steel return flanges (e.g., MPN 5111) welded onto reservoirs for fluid return ports.
Maintenance replacement — LDI Industries pump motor adapters (e.g., MPN 1960) replace worn or incompatible adapters in existing hydraulic systems.
Industrial automation — LDI Industries adapters (e.g., MPN 1950) used in stationary hydraulic presses and material handling equipment.

LDI INDUSTRIES Products

3G Electric supplies LDI INDUSTRIES vented oil level gauges. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Vented Oil Gauges: 4.48 in Body Ht, 2 3/4 in Sight Ht, 1/4" NPTF Male, 250°F Max. Temp Rating (MPN G305-2). Key specifications — Brand: LDI INDUSTRIES; Compatible with Series: G300 Series; Includes Thermometer: No Thermometer Included; Seal Material: Buna N.
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Vented Oil Gauges: 6.19 in Body Ht, 4 1/4 in Sight Ht, 1/2" NPTF Male, 250°F Max. Temp Rating (MPN G321-4). Key specifications — Brand: LDI INDUSTRIES; Compatible with Series: G320 Series; Includes Thermometer: No Thermometer Included; Seal Material: Buna N.
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Vented Oil Gauges: 6.19 in Body Ht, 4 1/4 in Sight Ht, 1/2" NPTF Male, 250°F Max. Temp Rating (MPN G321-4). Key specifications — Brand: LDI INDUSTRIES; Compatible with Series: G320 Series; Includes Thermometer: No Thermometer Included; Seal Material: Buna N.
Vented Oil Gauges: 5.98 in Body Ht, 4 1/4 in Sight Ht, 1/4" NPTF Male, 250°F Max. Temp Rating (MPN G307-2). Key specifications — Brand: LDI INDUSTRIES; Compatible with Series: G300 Series; Includes Thermometer: No Thermometer Included; Seal Material: Buna N.
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Vented Oil Gauges: 5.98 in Body Ht, 4 1/4 in Sight Ht, 1/4" NPTF Male, 250°F Max. Temp Rating (MPN G307-2). Key specifications — Brand: LDI INDUSTRIES; Compatible with Series: G300 Series; Includes Thermometer: No Thermometer Included; Seal Material: Buna N.
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