Pressure Adjustment Screw: Torque Range 5-15 Nm, Length 40 mm

Component Specifications

Definition

A threaded mechanical component designed to precisely regulate the pressure of starch slurry within pressure control valves by adjusting the position of internal valve elements through rotational movement, typically featuring fine threads and calibrated markings for accurate pressure settings.

Working Principle

Operates through rotational motion that translates into linear displacement, compressing or releasing internal valve springs or diaphragms to modify the flow restriction and thereby control the pressure of starch slurry passing through the valve assembly.

Materials

Stainless steel 316L (AISI 316L) with corrosion-resistant coating, hardness: HRC 35-40, surface finish: Ra 0.8 μm

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	40 mm
Head Type	Hex socket (Allen) 6 mm
Thread Type	M12 x 1.5 mm fine pitch
Torque Range	5-15 Nm
Temperature Range	-10°C to 120°C
Corrosion Resistance	IP67 equivalent
Pressure Adjustment Range	0.2-2.0 MPa

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 4762, DIN 912, ISO 898-1

Parent Products

This component is used in the following industrial products

Starch Slurry Pressure Control Valve

The Starch Slurry Pressure Control Valve is a flow control component used in starch manufacturing plants to maintain precise pressure levels during slurry transport between processing stages.

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Engineering Analysis

Risks & Mitigation

Thread galling due to starch residue accumulation
Over-torquing leading to thread stripping
Corrosion in high-moisture environments
Misalignment causing uneven pressure distribution

FMEA Triads

Trigger: Starch residue buildup in threads
Failure: Seized screw preventing adjustment
Mitigation: Implement regular cleaning schedule with food-safe solvents and apply food-grade lubricant

Trigger: Excessive torque during adjustment
Failure: Stripped threads or damaged valve seat
Mitigation: Use calibrated torque wrenches and provide operator training on proper adjustment procedures

Trigger: Material fatigue from cyclic loading
Failure: Screw fracture under pressure
Mitigation: Implement preventive replacement schedule based on cycle count and conduct regular visual inspections

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Thread pitch tolerance: ±0.01 mm, Diameter tolerance: h6, Straightness: 0.05 mm/100 mm

Test Method

Pressure cycling test per ISO 15848-1, Material certification per EN 10204 3.1, Food contact compliance testing per FDA 21 CFR 177.2600

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

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Manufacturers of Pressure Adjustment Screw

Manufacturer profiles associated with Pressure Adjustment Screw.

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Frequently Asked Questions

What maintenance is required for pressure adjustment screws in starch slurry applications?

Regular inspection for thread wear, cleaning to prevent starch buildup, and lubrication with food-grade anti-seize compound every 6 months or 2,000 operating hours.

How do I calibrate the pressure adjustment screw?

Use a calibrated torque wrench to apply specified torque values while monitoring pressure gauge readings, following manufacturer's calibration procedures with reference to pressure-volume curves.

Can this screw be used with other slurry types?

While designed for starch slurry, it can handle similar viscosity non-abrasive food slurries, but not recommended for abrasive or chemically aggressive media without material verification.

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.

Pressure Adjustment Screw