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Velqor

VELQOR KNOW-HOW

Insider know-how to enable best decision making for your team

Clear, unbiased answers on valves, fittings, hoses, and sourcing from India. We will tell you what is good and what is not, plainly, whether or not it leads you to buy from us. No fluff for its own sake, just what actually matters for you to make the right decisions.

Fittings

BSP vs NPT vs JIC vs ORFS: Fitting Threads Explained

How the four common hydraulic thread standards differ, and how to identify what you have before you order.

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Fittings

Quick-Release Coupling Types: ISO A, ISO B and Flat Face

The three coupling standards you meet most, why A and B do not interchange, and how to specify the right one.

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Fittings

How to Identify a Hydraulic Fitting

A step-by-step way to identify an unknown fitting by thread, seat and standard before you reorder.

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Fittings

SAE Flange Fittings: Code 61 vs Code 62

The two SAE flange pressure series, how to tell them apart, and why they are not interchangeable.

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Valves

Pressure Relief Valve vs Pressure Reducing Valve

They look alike but do opposite jobs. Tell the safety device from the control device and specify correctly.

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Valves

3-Way and 4-Way Ball Valves: L-Port, T-Port and X-Port

How the ball drilling decides the flow path, so you pick the pattern that diverts, mixes or reverses.

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Valves

Check Valves: Inline vs Pilot-Operated

How the two main hydraulic check valve types work, and when a pilot-operated valve is the right call.

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Valves

Flow Control vs Needle Valves

The difference between flow control and needle valves, and how to pick for accurate speed control.

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Hoses

Hydraulic Hose Dash Sizes Explained (-4, -6, -8…)

What dash sizes mean, the one common exception, and how to size the bore for your flow.

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Hoses

Why Hydraulic Hoses Fail: 6 Causes and How to Prevent Them

The six causes behind most hose failures, each with the practical step that prevents it.

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Hoses

SAE Hose Types: R1, R2, R7, R9 and R17

What the SAE 100R numbers mean and how to match hose construction to your pressure and routing.

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Hoses

Hose Pressure Ratings and the 4:1 Safety Factor

Working vs burst pressure, the 4:1 safety factor, and why you never design to the burst number.

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Sourcing

Importing Hydraulic Components from India

Duties, lead times and quality control: what actually decides whether an India sourcing decision works.

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Sourcing

The Export Document Set Explained

The core export documents every importer should check before goods ship, and what each one does.

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Sourcing

Third-Party Inspection: SGS, BV and TUV

How independent pre-shipment inspection works, when to use it, and what it verifies before goods ship.

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Valves

Directional Control Valves: Ways, Positions & Actuation

How way count, position count, and actuation method define a directional control valve configuration.

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Valves

Custom & Special Purpose Valves

When a standard catalog valve does not fit, and how the drawing-led custom process works.

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Fittings

Custom & Special Purpose Fittings

When standard adapters and reducers do not cover it, and how the drawing-led custom process works.

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Valves

NFPA D03 vs D05: Valve Mounting Patterns Explained

What NFPA D03 and D05 mounting patterns mean, how they differ, and what to confirm before ordering a directional valve.

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Valves

ISO 4401 Valve Porting Standard Explained

What ISO 4401 actually specifies, how it maps to NFPA D0X sizes, and why it matters before anything else in a valve spec.

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Valves

Hydraulic Valve Seal Materials: NBR vs FKM vs EPDM

Compare NBR, FKM, and EPDM seals and avoid the single most common seal-selection mistake.

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Valves

Valve Pressure Ratings: Working, Proof and Burst Pressure Explained

What working, proof, and burst pressure each mean, and why you should only ever design to the working pressure.

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Valves

Valve Body Material: Carbon Steel vs SS304 vs SS316

Compare carbon steel, SS304, and SS316 and the one factor, chloride exposure, that decides most material choices.

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Have a specific requirement?

Send us the spec, the application or even just a photo of the part. We will confirm what you need, tell you honestly where the real costs and lead times land, and help you get it right.

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