Floating Hydraulic Tank Level Gauge 400mm 1" BSPP / 3 Hole Mount – Sale
FLG400
Product Features:
Floating Hydraulic Tank Level Gauge 400mm 1" BSPP / 3 Hole Mount – Sale
Code: FLG400
Product: Flowfit Floating Tank Level Gauge, 400mm, 1" BSPP & 3 Hole Mount
The Flowfit FLG400 floating level gauge is designed for tank-top mounting and provides an electrical signal when the required fluid level is reached. Its 400mm probe length makes it suitable for monitoring fluid levels in compatible hydraulic and fluid storage tanks.
The FLG400 incorporates both a 1" BSPP threaded fixing and 3-hole mounting points in one level gauge, providing flexible installation options without needing separate versions.
Technical Overview
| Specification | Value |
|---|---|
| Part Number | FLG400 |
| Probe Length | 400mm |
| Mounting | 1" BSPP & 3 Hole Mount |
| Installation | Tank Top Mounted |
| Level Monitoring | Minimum or Minimum / Maximum |
| Electrical Contact | Normally Open or Normally Closed |
| Voltage | DC / AC up to 240V |
| Temperature Range | -10°C to +80°C |
| Maximum Pressure | 12 Bar |
Suitable Fluids
- Mineral oils
- Oil-water emulsions
- Diesel
- Water
Key Features
- 400mm floating level gauge
- 1" BSPP & 3-hole mounting in one level gauge
- Tank-top mounted design
- Minimum or minimum / maximum level monitoring
- Normally open or normally closed electrical connection
- Unsinkable floater
- Hermetically sealed electrical contact inside the floater rod
- Suitable for DC / AC voltages up to 240V
- Maximum working pressure 12 Bar
- Operating temperature range -10°C to +80°C
Mounting Information
The FLG400 is supplied with both 1" BSPP threaded mounting and 3-hole fixing points integrated into the same level gauge, giving greater flexibility when fitting to a compatible tank cover.
Electrical Operation
The level gauge provides an electrical signal when the monitored fluid level is reached. A single contact can be wired for either normally open or normally closed operation depending on the installation requirements.
Fluid Compatibility
The FLG400 is suitable for use with mineral oils, oil-water emulsions, diesel and water within the stated operating limits.
Need Help Choosing the Right Level Gauge?
If you are unsure about probe length, mounting arrangement, fluid compatibility or electrical requirements, our team can help you select the correct level gauge for your application.
Contact Us for technical advice, availability and delivery options.
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General delivery information
Thank you for visiting and shopping at www.flowfitonline.com. Below are the terms and conditions for the Shipping Policy for Harrier Fluid Power Ltd T/A Flowfit.
Orders are processed and shipped during standard working hours (08:30–17:00 BST), Monday to Friday (excluding Bank Holidays). All orders placed before 4pm Monday to Thursday and 3pm on Friday are normally processed and despatched on the same business day, subject to stock availability.
Build and assembly orders may require additional processing time. This includes, but is not limited to, hydraulic power units, gearbox and pump assemblies, hydraulic hose assemblies, and motor/engine pump sets. Due to current demand, these types of orders are currently experiencing an estimated additional 2–3 working days before despatch.
During periods of particularly high order volumes, delivery times may be extended further. Please allow additional time in transit for delivery once your order has been despatched.
If your order is extremely urgent and next-day delivery is critical, please contact our Sales Team before placing your order. We will do our best to accommodate your requirements and advise whether we can meet your requested delivery date.
If there will be a significant delay to your order, we will contact you via email or telephone.
United Kingdom delivery rates & estimates
| Service | Price | Terms |
|---|---|---|
| FREE Delivery | FREE | Free UK delivery is available for orders over £99.99+ VAT. Delivered in 1 -2 working days. |
| Express Delivery | £9.99 + VAT | UK Mainland delivery for orders under £99.99 + VAT. Delivered in 1 -2 working days. |
| Express 9am | £42.95 + VAT | Delivered by 9am next working day. |
| Express 12pm | £20.95 + VAT | Delivered by 12pm next working day. |
| Channel Islands | ||
| Standard Delivery | £20.95 + VAT | Delivery in 2–3 working days. |
| UK Highlands & Isles | ||
| Order value below £99.99 + VAT | £31.95 + VAT | Delivery in 2–3 working days. |
| Order value over £99.99 + VAT | £28.95 + VAT | Delivery in 2–3 working days. |
* Overnight delivery is only available for certain delivery addresses within the United Kingdom. Please contact us beforehand to confirm eligibility.
Email sales@flowfitonline.com or call 01584 876 033.
Collection: Customers are welcome to arrange collection using a courier of their choosing, or collect in person from our depot in Ludlow, Shropshire. Please advise us in advance so we can ensure your order is complete before collection.
International delivery rates & estimates
Shipping charges depend on weight and destination country and are calculated and displayed at checkout. Orders for delivery within the EU typically arrive on a 2–5 day service (depending on the destination). Shipments outside the EU typically arrive on a 3–7 day service (depending on the destination).
Please contact our Sales team for accurate delivery times. If your parcel has not arrived within the expected timeframe, please get in touch. Please ensure the shipping address entered at checkout is correct; we are not responsible for incorrect or undeliverable addresses.
Customs, duties and taxes
Import duties, taxes, and brokerage fees are not included in the product price or shipping and handling costs. These charges are the buyer’s responsibility. You may check with your country’s customs office to determine any additional costs.
By placing an international order (shipping outside the United Kingdom), the buyer is responsible for complying with their country’s laws, regulations, and restrictions. If a product is seized and destroyed by customs, we will not be responsible for losses, products, or shipping refunds.
Shipment confirmation & order tracking
You will receive a Shipment Confirmation email once your order has shipped, containing your tracking number(s). Tracking will be active within 24 hours.
Working closely with top carrier experts
We use some of the top carrier companies in the world, although you can also use your own carrier to collect your order. All deliveries require a signature on delivery. Below are our main carrier companies.

Damages
Harrier Fluid Power Ltd T/A Flowfit is not liable for products damaged or lost during shipping. If you receive your order damaged, please contact us to file a claim. Please save all packaging materials and damaged goods before filing a claim.
Returns policy
Our Return & Refund Policy provides detailed information about options and procedures for returning your order.