Which cover do I need for a fuel station sump?

The right model depends on your sump type and access requirements: 900mm Round Cover, D400 — Main access cover for large fuel station sumps, tanker sumps, and main underground tanks. Used for full access during installation, maintenance, and cleaning. 900mm Round Cover, D400 with inspection hole — Main sump cover with a small inspection hatch. Used for daily level checking, sampling, or visual inspection without removing the full heavy cover. 350mm Round Cover, D400 — Small access cover for secondary sumps, monitoring pits, pipework chambers, and small inspection points. 900×900mm Square Cover, D400 — Square access cover for square-shaped sumps, dispenser sumps, and modular underground chambers at fuel stations. All D400 covers are suitable for heavy vehicle traffic areas in petrol stations. If you have project drawings, send them to us and we'll advise the right model for each position.

What does DIP mean on the 900 DIP D400 model?

On the 900 DIP D400 model, DIP stands for Double Inspection Port. It means the cover is fitted with a small, dedicated inspection hatch in the centre, used for: Fuel level checking Liquid sampling Routine inspection …without removing the whole heavy cover. This design is widely used for fuel station sumps and underground tanks where frequent access is required.

Fuel Station Composite Manhole Covers — D400 Series

Product Range

Fuel Station Cover Series

All four models are D400-rated and designed for direct installation in petroleum retail forecourt environments. Select a model to view details.

900mm D400 Round Composite Cover - Fuel Station

900mm D400 Round Composite Cover - Gas Station

900mm D400 Round Composite Cover - Petrol Station

900mm D400 Round Composite Cover - Filling Station

Round

900mm D400Round Cover

Large-diameter round composite cover for fuel station forecourt utility access and tanker delivery areas. D400-rated for all heavy vehicle traffic. Standard watertight frame seal.

Ø900

Clear Opening

D400

Load Class

SMC

Material

▶
EN124 D400 certified — 40-tonne load rating for tanker delivery approach zones
▶
Non-conductive — Safe for installation in all forecourt fuel vapour areas
▶
Anti-slip moulded surface — Wet forecourt and road rated
▶
Zero scrap value — No theft risk at unattended fuel stations
▶
Lightweight vs. iron — Easier maintenance access by forecourt technicians

Request Quote → Full Specs ↓

900mm D400 Hatch Round Composite Cover - Fuel Station

900mm D400 Hatch Round Composite Cover - Gas Station

900mm D400 Hatch Round Composite Cover - Petrol Station

900mm D400 Hatch Round Composite Cover - Filling Station

900mm D400 Hatch Round Composite Cover - Oil Station

900mm D400 Hatch Round Composite Cover - Service Station

Dual Port

900mm DIP D400Double Inspection Port

Specialist cover with two independent inspection ports, allowing simultaneous or sequential access to two separate systems within a single sump — without removing the main cover.

Ø900

Clear Opening

2×Port

Inspection Holes

D400

Load Class

▶
Two independent inspection ports — Access submersible pump and vapour recovery independently
▶
Each port independently sealed — Maintains IP68 integrity when one port is open
▶
Reduces maintenance downtime — No need to remove full cover for routine inspections
▶
Non-conductive SMC — Safe for all fuel vapour environments
▶
Suitable for Stage-2 vapour recovery — Dual access required by modern VR system servicing

Request Quote → Full Specs ↓

900x900mm D400 Square Composite Cover - Fuel Station

900x900mm D400 Square Composite Cover - Gas Station

900x900mm D400 Square Composite Cover - Petrol Station

900x900mm D400 Square Composite Cover - Filling Station

Square

900×900mm D400Square Sump Cover

The industry-standard access cover for fuel containment sumps. Watertight IP68 seal prevents surface water and fuel ingress. Available with or without inspection hole and locking mechanism.

900×900

Dimensions (mm)

D400

Load Class

IP68

Watertight

▶
IP68 watertight perimeter seal — Prevents fuel, water, and chemical ingress into sumps
▶
Non-conductive SMC material — Zero spark risk in fuel vapour environments
▶
Optional inspection hole — 100mm central port for access without full removal
▶
Optional locking mechanism — T-bar or flush lock for unmanned station security
▶
Chemical resistant EPDM seal — Resistant to fuel, oil, and forecourt cleaning agents

Request Quote → Full Specs ↓

350mm D400 Round Composite Cover - Fuel Station

350mm D400 Round Composite Cover - Gas Station

350mm D400 Round Composite Cover - Petrol Station

350mm D400 Round Composite Cover - Filling Station

350mm D400 Round Composite Cover - Oil Station

Small Bore

350mm D400Round Cover

Small-diameter D400 composite cover for individual sensor access, vent points, and small utility connections within the fuel station forecourt. Full D400 load rating despite compact size.

Ø350

Clear Opening

D400

Load Class

SMC

Material

▶
Compact D400 rating — Full 40-tonne load capacity in a small footprint for tight forecourt layouts
▶
Sensor and vent access — Sized for leak detection sensor access, STP vent connections, and interstitial monitoring
▶
Non-conductive — Safe near fuel vapour and electrical equipment
▶
Lightweight, easy to handle — Minimal disruption during routine sensor servicing
▶
Matches full-size covers — Same material, colour, and surface finish as other M&C fuel station covers

Request Quote → Full Specs ↓

1040mm C250 Round Composite Cover - Fuel Station

1040mm C250 Round Composite Cover - Gas Station

1040mm C250 Round Composite Cover - Petrol Station

1040mm C250 Round Composite Cover - Telecom

Round

1040mm C250Round Cover

Extra-large diameter round composite cover for wide-bore fuel station sumps, large underground tank access, and multi-pipe utility chambers. C250-rated for light to medium vehicle traffic areas.

Ø1040

Clear Opening

C250

Load Class

SMC

Material

▶
Extra-large clear opening — Provides access to wide sumps and multi-pipe tank chambers in a single cover
▶
EN124 C250 certified — 25-tonne load rating suitable for forecourt service areas and light vehicle zones
▶
Non-conductive — Safe for use in fuel vapour environments throughout the forecourt
▶
Zero scrap value — Composite material eliminates theft risk at unattended stations
▶
Custom logo option — Brand or operator logo moulded into cover surface on request

Request Quote → Full Specs ↓

Quick Reference

All Models — Side by Side

A full comparison of all five fuel station cover models. For detailed specifications and test reports, request a quote.

Model	Shape	Clear Opening Size	Load Class	Watertight	Inspection Port	Lock Option
900×900 D400	Square	900×900mm	EN124 D400	IPX7	NO	YES
900mm D400	Round	Ø900mm	EN124 D400	IPX7	NO	YES
900 DIP D400	Round	Ø900mm	EN124 D400	IPX7	YES	YES
350mm D400	Round	Ø350mm	EN124 D400	IPX7	NO	Optional
1040mm C250	Round	Ø1040mm	EN124 C250	IPX7	NO	YES

Where Each Cover Is Used

Fuel Station Installation Zones

Each position in a fuel station forecourt has specific load and access requirements. Our five-model range covers every zone.

Forecourt position	What it serves	Load class	Models
Tanker delivery & fill points	Where tankers approach and connect to underground storage. Takes repeated 40-tonne axle loads.	D400	900×900 D400 900mm D400
Underground sump access	Containment sumps housing submersible pumps, vapour recovery systems and leak detection equipment.	D400	900×900 D400 900 DIP D400
Sensor & monitoring points	Interstitial leak detection sensors, STP vent connections and electronic monitoring embedded in the slab.	D400	350mm D400
Wide-bore & service areas	Wide sumps, large tank access and multi-pipe utility chambers in light to medium traffic zones.	C250	1040mm C250

Positions vary by site and operator. Send us the forecourt drawing and we will mark up the cover schedule for you.

Material Advantage

Why Petroleum Operators
Specify SMC Composite

In fuel station environments, material choice is a safety and operational decision — not just a procurement one.

Non-Conductive — No Spark Risk

Metal covers can generate sparks if struck by tools or vehicle components in fuel vapour atmospheres. SMC composite is electrically non-conductive by material — this risk is eliminated by design, not by procedure or warning signage.

Permanent Watertight Integrity

Fuel containment regulations require sumps to remain sealed against surface water ingress. Our EPDM gasket system maintains IP68 integrity throughout the cover's service life — unlike metal covers whose sealing surfaces degrade from corrosion.

Fuel & Chemical Resistant

Petrol, diesel, and forecourt cleaning chemicals accelerate corrosion in ferrous metal covers, eventually compromising both seal and structural integrity. SMC composite is chemically inert to all standard petroleum products.

Self-Manufactured SMC — Full Quality Control

We produce our own SMC compound in-house. This means we control the formula — fibre content, resin chemistry, and filler — optimised specifically for fuel station load and chemical conditions. No third-party material variability.

EN124D400 · European Standard

PetroChinaApproved Supplier

SinopecApproved Supplier

ISO 9001Quality Management

SGS3rd Party Test Reports

Common Questions

Frequently Asked Questions

The right model depends on your sump type and access requirements:

900mm Round Cover, D400 — Main access cover for large fuel station sumps, tanker sumps, and main underground tanks. Used for full access during installation, maintenance, and cleaning.
900mm Round Cover, D400 with inspection hole — Main sump cover with a small inspection hatch. Used for daily level checking, sampling, or visual inspection without removing the full heavy cover.
350mm Round Cover, D400 — Small access cover for secondary sumps, monitoring pits, pipework chambers, and small inspection points.
900×900mm Square Cover, D400 — Square access cover for square-shaped sumps, dispenser sumps, and modular underground chambers at fuel stations.

All D400 covers are suitable for heavy vehicle traffic areas in petrol stations. If you have project drawings, send them to us and we'll advise the right model for each position.

On the 900 DIP D400 model, DIP stands for Double Inspection Port. It means the cover is fitted with a small, dedicated inspection hatch in the centre, used for:

Fuel level checking
Liquid sampling
Routine inspection

…without removing the whole heavy cover. This design is widely used for fuel station sumps and underground tanks where frequent access is required.

Yes. We are an approved supplier to both PetroChina and Sinopec station construction and refurbishment programmes. We can provide verification documentation on request. We also supply OEM-branded covers with operator logos moulded into the surface for branded station builds. Contact us with your project details and we will provide the relevant qualification documents.

Yes. Logos and text can be moulded directly into the anti-slip surface pattern. We supply branded covers for major oil company programmes. Minimum quantities apply for custom tooling. Provide your artwork and programme volume when requesting a quote and we will advise on feasibility and pricing.

Standard lead time is 20–40 days after receipt of payment, depending on order quantity and our production schedule. Orders requiring custom tooling take longer, as mould development normally adds 30–60 days. Contact us with your project timeline and required quantities and we will provide a specific lead time with your quotation.

Get Pricing

Request a Quote — Fuel Station Series

Tell us your project scope and which models you need. We'll respond within 24 hours with pricing, lead time, and any required certification documentation.

info@smcmanhole.com WhatsApp — Fast Reply

✓ Response within 24 hours
✓ PetroChina & Sinopec approved — docs available
✓ EN124 D400 test reports on request
✓ OEM branding available
✓ Free sample for qualified buyers

Fuel Station Cover Inquiry

Prefer to email directly? info@smcmanhole.com →

✓ Composite (FRP / SMC) Covers ONLY. We do NOT produce concrete / cement, cast iron, ductile iron, or plastic covers. What is SMC? →

Enquiry Received

Thank you. We'll respond within 24 hours with pricing and lead times.

SMC Composite Coversfor Fuel Stations

SMC Composite Covers
for Fuel Stations