Geberit Füllventil Typ 383 für Aufputz Spülkasten, 240.700.00.5

Geberit Füllventil Typ 383 für Aufputz Spülkasten, 240.700.00.5

ASIN: B0DM6ZN3BR
Analysis Date: Aug 25, 2026

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Review Analysis Results

B
Authenticity Grade
10.00%
Fake Reviews
4.89
Original Rating
4.60
Adjusted Rating

Analysis Summary

The vast majority of these reviews appear genuine, with clear signals of authenticity such as specific product context, personal installation experiences, and balanced perspectives. For instance, several reviews mention the Geberit Füllventil Typ 383 being used as a replacement in older OBI or UP spülkästen, providing detailed accounts of fit and installation ease. One review even notes a minor drawback—that the valve is slightly louder than the old one—which is a classic sign of a genuine, balanced review. Another mentions the need for an existing connection line, adding practical specificity. These details strongly indicate real user experiences rather than fabricated content.

Evidence of authenticity is abundant. The reviews include personal stories, such as one user who switched to Geberit after receiving unusable products from other sellers, and another who successfully installed the valve in an older OBI tank without any adjustments. The mention of specific product types (e.g., 'UP Spülkasten') and the acknowledgment of minor issues (e.g., noise) further reinforce genuineness. Even the shorter reviews, like 'universell einsetzbar, gute Qualität' and 'Gute Qualität, einfache Montage,' are typical of concise but honest feedback, lacking the exaggerated or promotional language often seen in fake reviews.

No clear manipulation patterns are present. There is no repetitive phrasing across reviews, no generic praise without substance, and no suspicious clustering of overly detailed positive comments. The one non-German review (in Arabic) simply says 'رائع' (wonderful), which is brief but not indicative of fakery—it could be a genuine international customer. The overall tone is consistent with organic customer feedback for a well-regarded plumbing component.

Balanced summary: The reviews collectively paint a picture of a reliable, easy-to-install product that works well in older tanks, with minor caveats like noise. The authenticity signals are strong, and the low fake percentage reflects that. While a few reviews are brief, they are not suspicious, and the presence of detailed, personal accounts outweighs any minor concerns. This is a clear case of genuine customer satisfaction, not orchestrated manipulation.

Key patterns identified in the review analysis include: Specific product context (e.g., OBI, UP Spülkasten), Balanced feedback including minor drawbacks, Personal installation stories.

Review Statistics

543
Total Reviews on Amazon
-0.29
Rating Difference
Editor's Analysis

Geberit Typ 383: The Smart Choice for Reliable Toilet Fill Valve Replacements

When your toilet's fill valve fails, the Geberit Füllventil Typ 383 (240.700.00.5) is a top contender for replacement, especially for older in-wall or surface-mounted cisterns. This guide helps you understand what to look for in a fill valve and why this specific model stands out for its durability and quiet operation.

Key Considerations Before Buying

  • Compatibility is king: Ensure the Typ 383 matches your cistern's connection thread and height. It's designed for Geberit surface-mounted cisterns, but many users report it fits older OBI and other brands—always measure your existing valve's dimensions first.
  • Water pressure and noise: The Typ 383 is praised for its quiet filling, but performance can vary with your home's water pressure. Check if your system has pressure fluctuations, as this valve's diaphragm mechanism may respond differently.
  • Installation effort: While DIY-friendly, you'll need basic plumbing skills. The valve must be correctly adjusted to the cistern's overflow level to prevent continuous running or insufficient flush—follow the included instructions carefully.

What Our Analysts Recommend

In a fill valve, look for a robust float mechanism that resists sticking, a reliable shut-off that prevents leaks, and materials that won't corrode over time. Geberit's engineering typically includes a reinforced diaphragm and a smooth-gliding float, which are signs of quality. Also, consider the valve's adjustability range to fit various cistern depths.

Spülkästen Market Context

Market Overview

The market for toilet fill valves is dominated by a few key brands, with Geberit being a premium choice known for long-lasting components. Many homeowners now seek replacement parts that extend the life of existing cisterns, rather than replacing the entire unit, driven by sustainability and cost savings.

Common Issues

Common issues in this category include valves that fail to shut off completely, leading to constant water flow, and float mechanisms that get stuck due to mineral buildup. Incompatibility with older cisterns is another frequent problem, as thread sizes and inlet heights vary.

Quality Indicators

Quality indicators include a solid, heavy construction (often brass or high-grade plastic), a smooth-operating float, and a design that allows for easy cleaning or part replacement. Look for valves with adjustable fill height and those that meet European water regulations, as Geberit does.

Review Authenticity Insights

Grade B Interpretation

The Grade B rating with an estimated 10% fake reviews suggests that while the vast majority of feedback is genuine, a small portion may be inflated or unverified. This is typical for popular products, and the high adjusted rating of 4.60 still indicates strong real-world satisfaction. The authentic reviews often mention specific installation contexts, like replacing valves in 'OBI' cisterns, which adds credibility.

Trust Recommendation

Given the moderate fake review percentage, we recommend focusing on reviews that describe specific experiences, such as ease of installation or longevity, rather than generic praise. Look for patterns in complaints—if several mention a particular issue, it's likely real. The product's high rating and brand reputation make it a trustworthy purchase, but be cautious of reviews that seem overly promotional.

Tips for Reading Reviews

When reading reviews, filter for recent ones and those with photos, as they often show actual installations. Pay attention to comments about fit with different cistern models, and note any recurring mentions of 'quiet' or 'leak-proof'—these are key benefits. Also, consider the reviewer's profile: verified purchases are more reliable.

Expert Perspective

The Geberit Füllventil Typ 383 is a well-engineered component that lives up to its premium reputation. The analysis shows a high genuine satisfaction rate, and the product's design addresses common fill valve failures, such as diaphragm wear and float sticking. Its compatibility with various cisterns, as noted in reviews, makes it a versatile choice for replacements. While the 10% fake review rate is a minor concern, the consistent quality feedback and brand history justify its strong recommendation.

Purchase Considerations

Before buying, double-check your cistern's inlet thread size and height to ensure a perfect fit. Also, consider whether you need a complete valve or just a replacement diaphragm—Geberit offers parts separately, which can be more economical. If you're not confident in DIY installation, factor in a plumber's cost, though most users find it straightforward.

Comparing Alternatives

Shoppers should compare the Typ 383 with other premium fill valves like the Fluidmaster 400 series or the Grohe Füllventil, which may offer different adjustability features or pricing. However, Geberit's compatibility with many cisterns and its quiet operation often tip the scale in its favor.

Price Analysis

This Geberit fill valve is a mid-range, high-quality component with excellent customer satisfaction. Since the current Amazon price is unknown, aim for a price around €35-€40; anything below €30 is a great deal. Given the brand's reliability, it's worth paying a slight premium over cheaper alternatives.

MSRP Assessment

Estimated MSRP: €35-€45
Source: Product category average
Amazon Price: Unable to compare

Market Position

Positioning: Mid-range
Alternatives Range: €15-€60
Value: Geberit is a trusted brand with high ratings, offering reliability and durability at a moderate premium over generic valves.

Buying Tips

Best Time to Buy: No strong seasonality; prices are stable year-round, but watch for occasional lightning deals.
Deal Indicators: A good deal would be under €30, especially if it includes free shipping or a discount on multi-buy.
Watch For: Beware of third-party sellers with prices significantly below €25, as they may be counterfeit or lack warranty.
Price analysis generated by AI based on product category and market research. Actual prices may vary. Last analyzed: Aug 25, 2026

Understanding This Analysis

What does Grade B mean?

This product has good review authenticity with minor concerns. While most reviews appear genuine, we detected some patterns that warrant mild caution.

Adjusted Rating Explained

The adjusted rating (4.60 stars) represents what we estimate this product's rating would be if fake reviews were removed. This product's adjusted rating is lower than Amazon's displayed rating (4.89 stars), suggesting positive fake reviews may be inflating the score.

How We Detect Fake Reviews

Our AI analyzes multiple factors: language patterns (generic vs. specific), reviewer behavior (history, timing), temporal anomalies (review clusters), verification status, sentiment authenticity, and statistical outliers. No single factor determines a review is fake - we look at the combination of signals.

Important Limitations

No automated system is perfect. Sophisticated fake reviews can evade detection, and some genuine reviews may be incorrectly flagged. Use this analysis as one data point in your purchasing decision, not the only factor. Reading actual review content yourself is always valuable.

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