Hydraulic manifold blocks · cartridge and subplate valve mounting, body material by working pressure, safety factor, surface treatment and burr-free passages
A hydraulic manifold is a machined or cast block whose drilled internal passages connect cartridge valves, subplate (CETOP) valves, pumps and other components into one integrated hydraulic circuit, replacing separate valves and much of the piping between them. Ask three things first: what circuit and flows the block must carry, what working pressure and duty set its body material, and how its passages are cleaned and its surfaces protected.
Custom and standard hydraulic manifold blocks, cartridge valve bodies and subplates for mobile and industrial hydraulic systems, in aluminum, ductile iron, steel or stainless steel. Instrument valve manifolds for gauges and transmitters, sanitary process valve manifolds, pneumatic valve islands and hydraulic valves sold alone (a separate product page) are outside this page except where compared.
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HydraForce describes hydraulic manifolds and plates as a central hub that consolidates valves, pumps and other components into a single integrated unit, with manifolds made of aluminum, steel or ductile iron, and subplates as flat, flange-mountable bases for cartridge valves, CETOP valves and other components. [4] Its custom manifolds can be block or casting, anodized or zinc plated, with standard cavities, fittings and CETOP valves included. [5]
Daman, a manifold maker, rates nearly all of its 6061-T6 aluminum standard products and all its own custom designs for 3,000 psi maximum operating pressure, and nearly all of its 65-45-12 ductile iron standard products and all its own ductile custom designs for 5,000 psi, each with a 3:1 safety factor, assuming a properly designed, assembled and maintained system in an average duty cycle. It says working pressure should be considered in accordance with ISO 4413, that customer designs must be reviewed for wall thickness before a rating is assigned, and that duty cycle and environment can override pressure as the deciding factor. It also uses 17-4 H1150 stainless steel, which it gives a hardness of 28 HRC and a yield strength of 105,000 psi. [1]
Editorial calculation: 3,000 psi × 0.0689 ≈ 207 bar and 5,000 psi ≈ 345 bar; with a 3:1 safety factor the corresponding design basis is 9,000 psi and 15,000 psi. A circuit working at 250 bar would therefore exceed Daman's aluminum rating and fall within its ductile iron rating. The 250 bar figure is an assumed example; confirm the rating for your block design and duty with the maker.
Give the supplier the hydraulic circuit diagram, valve list (cartridge cavity standards, CETOP sizes), flows and maximum working pressure per circuit, pressure peaks and duty cycle, port types and sizes, fluid type and cleanliness class, operating temperature, environment (outdoor, corrosive, washdown), surface treatment, mounting, space envelope, and testing (pressure test, flushing, cleanliness report).
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Daman's surface treatment guidance matches coating to material: Type II sulfuric anodize for aluminum, a "nearly clear oxide coating which is usually less than 0.001” thick" that gives good corrosion protection in mild environments and minimal wear protection; electroless nickel for aluminum or ductile iron; manganese phosphate and black oxide for ductile iron; and passivation for stainless steel. [2]
For cleanliness, Daman describes thermal deburring, in which parts are exposed in a closed chamber to a combusting fuel–oxygen mixture that removes internal and external burrs and particles, including hair-sized thread burrs in ports and cavities that cannot be seen by eye and may appear only after a fitting or valve is screwed in and removed. It offers the process for parts up to 10 × 11 × 22 in. [3]
Editorial note: ask how internal intersections are deburred and cleaned, whether a cleanliness level is certified for the finished block, and what pressure test is applied before shipment.
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Listings include custom hydraulic manifold blocks, cylinder control and pilot-operated check valve blocks, ultra-high-pressure manifolds and general hydraulic manifolds. Ask each for body material and pressure rating, cavity standards, surface treatment, deburring and cleanliness, and test records.
04
HydraForce supplies the body, cavity and subplate rows; Daman's thermal-deburring and surface-treatment pages supply the port, passage and coating rows.
| Part | Role | Fix in the order |
|---|---|---|
| Body (block or casting) | Holds passages and cavities. [5] [1] | Material and pressure rating. |
| Cartridge cavities | Receive screw-in valves. [5] | Cavity standards. |
| Subplate mounting faces | Mount CETOP valves. [4] | Interface sizes. |
| Ports | Connect lines and gauges. [3] | Port type and size. |
| Internal passages | Connect the circuit; must be burr-free. [3] | Deburring and cleanliness. |
| Surface treatment | Corrosion and wear protection. [2] | Coating by material. |
| Valves and plugs | Complete the circuit. | Valve list and plugs. |
05
Daman's pressure ratings and the body-material options are the only published values here; flow, port sizes, pressure drop and weight depend on your circuit design.
| Field | What it means and published values | Ask the supplier for |
|---|---|---|
| Flow Rate (L/min) | Flow through each passage and valve. | Rated flow per circuit. |
| Number of Ports | Set by the circuit. | Port list. |
| Port Size (inch) | Line and gauge connections. | Thread standard and size. |
| Body Material | Aluminum, steel, ductile iron, stainless. [4] [1] | Material and grade. |
| Seal Material | Valve and plug seals; fluid compatibility. | Compound. |
| Operating Temperature (°C) | Fluid and environment. | Range. |
| Surface treatment | Coating choice by material; Daman's Type II anodize on aluminum is “usually less than 0.001” thick”. [2] | Coating and thickness. |
| Weight (kg) | Mounting. | Weight. |
| Pressure Drop (MPa) | Losses through passages and valves. | Pressure drop at rated flow. |
| Maximum Operating Pressure | Examples: 3,000 psi aluminum, 5,000 psi ductile iron, 3:1 safety factor. [1] | Rating for your design. |
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Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Circuit: [diagram; valve list; cavities; CETOP sizes] Pressure: [working; peaks; duty cycle] Flow: [per circuit] Ports: [type; size; number] Material: [aluminum, ductile iron, steel, stainless] Finish: [coating; deburring; cleanliness class] Test: [pressure test; flushing; report]
12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Lists hydraulic manifold blocks including cylinder control blocks and pilot-operated double check valve blocks.
Product scope checked 2026-10-11
Lists custom hydraulic manifold blocks and hydraulic manifolds with valves.
Product scope checked 2026-10-11
Lists hydraulic manifolds including ultra-high-pressure manifolds among accessories.
Product scope checked 2026-10-11
Has a manifold blocks product category alongside hydraulic articles.
Product scope checked 2026-10-11
Lists a hydraulic manifold among industrial products.
Product scope checked 2026-10-11
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
Daman rates nearly all of its standard 6061-T6 aluminum manifolds (and all its own custom designs) for 3,000 psi and nearly all of its standard 65-45-12 ductile iron manifolds for 5,000 psi maximum operating pressure, each with a 3:1 safety factor, assuming a properly designed, assembled and maintained system in an average duty cycle. [1]
Daman applies Type II anodize, a thin oxide giving good corrosion protection in mild environments, or electroless nickel. [2]
Daman notes hair-sized thread burrs in ports and cavities cannot be seen and can appear after fittings are fitted and removed; thermal deburring removes them. [3]
Sources checked 2026-10-11. Daman and HydraForce are hydraulic manifold and valve makers describing their own products and practices; their ratings and options are examples, not limits for other makes.
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