Orifice Seat: Temperature Range -40°C to 200°C

Component Specifications

Definition

A critical fluid control component that provides a precisely machined sealing surface and flow restriction orifice within fluid caps or body assemblies, designed to regulate flow rates, create pressure drops, and ensure leak-proof operation in hydraulic and pneumatic systems.

Working Principle

Creates controlled flow restriction through a precisely sized orifice, converting fluid pressure energy to kinetic energy while maintaining sealing integrity between mating surfaces to prevent leakage.

Materials

Stainless steel (AISI 304/316), brass (C36000), carbon steel (AISI 1018/1045), or engineered polymers (PTFE, PEEK) depending on application requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	HRC 45-55 for metallic versions
Surface Finish	Ra 0.4-1.6 μm
Pressure Rating	Up to 6000 psi
Orifice Diameter	0.5-10.0 mm
Temperature Range	-40°C to 200°C
Flatness Tolerance	0.01 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 4401, DIN 24342, ISO 17292, SAE J1926

Parent Products

This component is used in the following industrial products

Fluid Cap / Body

The main housing component of a spray nozzle assembly that contains and directs fluid flow.

View Product Details

Engineering Analysis

Risks & Mitigation

Flow instability due to improper sizing
Leakage from surface imperfections
Cavitation damage in high-pressure drops
Corrosion from incompatible fluids
Thermal expansion mismatch

FMEA Triads

Trigger: Improper installation torque
Failure: Seat deformation leading to leakage
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications

Trigger: Abrasive particles in fluid
Failure: Orifice erosion and flow rate changes
Mitigation: Install proper filtration systems and use wear-resistant materials

Trigger: Thermal cycling
Failure: Fatigue cracking and loss of sealing integrity
Mitigation: Select materials with compatible thermal expansion coefficients

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01 mm for orifice diameter, ±0.005 mm for flatness

Test Method

Flow coefficient (Cv) testing per ISO 6358, leak testing per ISO 15848, pressure cycling per SAE J1926

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Orifice Seat

Manufacturer profiles associated with Orifice Seat.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of an orifice seat?

The orifice seat serves dual functions: providing a precise sealing surface to prevent fluid leakage and containing a calibrated orifice to regulate flow rates and create controlled pressure drops in fluid systems.

How do I select the right orifice seat material?

Material selection depends on fluid compatibility, pressure requirements, temperature range, and corrosion resistance needs. Stainless steel offers corrosion resistance, brass provides good machinability, while polymers offer chemical resistance and lower cost.

What maintenance is required for orifice seats?

Regular inspection for wear, scoring, or erosion; cleaning to prevent clogging; and replacement when sealing surfaces degrade beyond specified tolerances. Proper torque during installation is critical to prevent deformation.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Orifice Seat