Suction Rubber Hose with Sandwich Flange

Collapse-resistant suction hose with rubber-lined sandwich flange, -0.1 to 1.0MPa, ID 100-1100mm.

Specifications for Suction Rubber Hose with Sandwich Flange
Product Name	Suction Rubber Hose with Sandwich Flange
Inner Diameter (ID)	100-1100 mm
Length	500-11800 mm
Working Pressure (WP)	-0.1 to 1.0 MPa
Burst Pressure (BP)	-0.3 to 3.0 MPa
Flange Type	Sandwich flange
Application	CSD/TSHD dredger suction and pump system
Origin	China

Get a quotation Email specifications

Specifications are supplied per order within the ranges shown. Send the flange drawing or the details of the section being replaced and the connection is machined to match.

Overview

Same suction duty, different joint. This hose serves the drag arm of a TSHD or the cutter ladder of a CSD, reinforced with spiral steel wire or multi-layer construction so it will not collapse when the pump pulls a vacuum, and terminated in sandwich flanges rather than bare steel ones. It is specified where the flange sealing face itself is exposed to the abrasive medium.

Who it is for

Dredging contractors specifying suction line where the flange face needs the same rubber protection as the hose bore.

Key benefits

Spiral steel wire or multi-layer reinforcement resists collapse under vacuum
Rated -0.1 to 1.0 MPa working pressure
Highly wear-resistant natural rubber for demanding dredging conditions
Internal high-strength steel rings absorb pump vibration and pressure pulsation
Sandwich flanges keep the wetted joint surfaces rubber lined

Problems it solves

What goes wrong without it

1

Vacuum collapse on the suction side stops production and is often diagnosed late, after throughput has already dropped.

2

A bare steel flange face on the suction side wears from the inside out where the slurry passes the joint.

3

Pump pulsation travels back through a rigid connection into the mounting structure; the reinforced rubber body absorbs it.

Construction and technical features

Reinforcement: high-tensile textile with steel rings or spring steel wire for vacuum resistance
Body: highly wear-resistant natural rubber compound
Internal high-strength steel rings for vibration and pulsation absorption
Flanges: sandwich type
Flexible body with flanged ends for easy manoeuvring during operation

Quality control

Raw material test on every batch of natural rubber, tensile textile and rubber additives before it enters the warehouse
Hose dimension check on inner diameter, outer diameter, wall thickness and flange alignment against the design drawing
Weight check on every hose to confirm it falls inside the agreed tolerance band
Hydrostatic or vacuum pressure test to the specified working pressure when the order calls for it
Third-party inspection can be arranged on request

Where it is used

TSHD drag arm suction section
CSD cutter ladder suction line
Dredge pump inlet where joint erosion has been observed
Long-duration maintenance dredging with continuous vacuum

Customisation

Inner diameter 100-1100 mm, length 500-11800 mm
Reinforcement type selected for the vacuum duty
Flange drilling to your existing table
Customer identification marking

How it compares

Versus the steel-flange suction hose, this version rubber lines the wetted joint surfaces; the reinforcement, ratings and dimensions are the same. Versus a discharge hose, neither should be swapped in: discharge hose is not reinforced against vacuum collapse.

Selection and use notes

Confirm the actual suction duty against the -0.1 MPa vacuum rating before ordering
Bolt up evenly in a crossing pattern against the rubber-lined face
Give the drag arm its full movement range without reaching the hose bend limit
Replace any section showing ovalisation rather than attempting a field repair

FAQ

Questions buyers ask

Why not use a discharge hose on the suction side?

Discharge hose is built for positive pressure. The suction hose is reinforced with spiral steel wire or multi-layer construction specifically to prevent collapse under vacuum conditions.

What is the pressure range?

-0.1 to 1.0 MPa working pressure and -0.3 to 3.0 MPa burst pressure.

What sizes do you supply?

Inner diameter 100-1100 mm and length 500-11800 mm.

Does it help with pump vibration?

Yes. The inner high-strength steel rings absorb vibration and pulsating pressure generated by the dredge pump and the flowing medium.

Can we specify the flange drilling?

Yes. Send the flange drawing or the details of the section being replaced.

Is independent inspection available?

Yes, a third-party inspection agency can be invited according to your requirements.