DQ Marine

Marine Equipment & Technical Supplies

TECHNICAL DATASHEET Issued 2026-08-21

DQ MARINE PRODUCT DATA

Suction Grille A Type

Category
Manhole Cover
Origin
China
Suction Grille A Type

Product Overview

DQ Marine supplies marine equipment and technical products for shipyards, vessel operators, offshore projects and industrial buyers worldwide.

Key Specifications

Category Manhole Cover
Model / SKU type-suction-grille
Origin China

Technical Information

China Suction Grille A Type:

Bottom suction grille mainly filters the impurities mixed in the suction sea water, prevents the impurities from blocking the freshwater heat exchanger and the lubricating oil heat exchanger, and avoids the impurities from winding the cooling water pump and so on.

Drawing:
Specification:

Valve Nominal Path Grid Block Grid Bolt Pin Bolt Hull hole size Flow area ratio Weight
L B H H1 δ h F δ1 Quantity Diameter Quantity Diameter
100 160 224 100 65 7 20 20 5 6 M10 2 M12 178*262*50 3.25 6.9
125 202 294 100 65 7 20 20 5 6 M12 2 M12 220*310*50 3.24 8.2
150 210 390 105 70 8 25 20 5 6 M12 2 M12 230*410*60 3.26 11.2
20 290 442 110 75 8 25 20 5 6 M12 2 M12 310*462*60 3.60 17.7
25 360 550 115 80 10 30 25 6 5 M12 2 M12 384*574*80 3.05 32.3
300 480 616 130 95 10 30 25 6 5 M16 2 M16 504*640*80 3.08 42.6
350 526 740 130 95 10 30 25 6 7 M16 2 M16 550*764*80 3.00 50.0
400 592 868 145 105 12 35 25 6 7 M16 2 M16 620*896*100 3.00 76.7
450 652 992 145 105 12 35 25 6 7 M16 2 M16 680*1020*100 3.10 91.0
500 662 1176 150 110 12 40 25 6 7 M16 2 M16 690*1204*100 3.03 112.7

Picture:
Product Advantage:
1.Satisfactory Quality
2.Competitive Price
3.Prompt Delivery
4.7x24 hours service
Packing and Delivery:
1. Standard Export Packing or Seaworthy Packing, if you have special requirement, please specify when inquiry.
2. Fast Delivery, delivery time can negotiate when order.
How to Order?
1. Please inform us the model, type or size you need.
2. Please inform us the quantity to make the best price for you.
3. Shipment Model: Air or Sea shipment.
4. Special requirement if any.