Product Description
1. Product Overview and Key Features
The Fisher 21B4037X022 is a precision industrial mechanical pressure gauge engineered for demanding applications in process control, oil and gas, chemical processing, and power generation. As part of Fisher's instrument portfolio (a subsidiary of Emerson), it adheres to international standards including EN 837-1 and ASME B40.1, ensuring reliability under extreme conditions.
Key features include:
Construction: All wetted parts (Bourdon tube, socket, movement) use 316L stainless steel (>95% corrosion resistance), with Alloy 400 optional for corrosive environments .
Accuracy: Class 1.0 per EN 837 (equivalent to ASME Grade 1A), delivering ±1.0% full-scale accuracy .
Durability: Rated for 300% overpressure protection (temporary) without system failure; low-pressure variants (L Series) support up to 1,000% overpressure protection .
Environmental Adaptability: Liquid-fillable case (standard: 99% glycerin) for vibration damping and condensation prevention. Silicone oil alternatives available for extreme temperatures .
Detailed Photos
Product Parameters
| Parameter |
Specification |
| Case Size |
100 mm (4") or 115 mm (4.5") |
| Pressure Ranges |
Vacuum: -1-0 bar; Pressure: 0-600 bar to 0-1000 bar |
| Accuracy |
±1.0% of span (EN 837 Class 1.0) |
| Process Connection |
Options: NPT, BSP-P threads, face seal swivel, or tube adapter |
| Load Limits |
Steady pressure: 75-100% FS; Pulsating: 65-90% FS |
| Operating Temp. |
-40°C to +100°C (standard filling); glycerin (86%) for sub-zero use |
3. Applications
Oil & Gas: Wellhead monitoring, refinery pressure control.
Chemical Processing: Reactor pressure safety, pipeline integrity.
Power Generation: Boiler feedwater systems, turbine auxiliaries.
Critical Safety: Compatible with solid-front/safety-pattern designs (IMPS series) to contain ruptures .
4. Design and Operational Principles
Bourdon Tube Mechanism: Utilizes a C-type or coiled stainless-steel Bourdon tube, translating pressure into linear motion for dial indication .
Safety Enhancements: Solid-front construction (per ASME B40.1) prevents media ejection during failure.
Liquid Filling: Mitigates vibration-induced needle oscillation and internal condensation. Warning: Glycerin/silicone oil must be avoided in oxygen service due to fire risk .
5. Installation and Maintenance
Installation Guidelines:
Mounting: Vertical orientation preferred; avoid direct heat/vibration sources.
Pulsation Damping: Use snubbers or restrictors for cyclic pressures >65% FS.
Calibration: Factory-tested per EN 837; helium leak testing optional.
Maintenance Best Practices:
Cleaning: Request specialized cleaning (lubricant-free, silicon-free, oxygen-service-ready) for sensitive media.
Replacement Intervals: 5-7 years in aggressive environments; verify accuracy annually.
6. Ordering and Customization
Model Variants:
IMPH Series (Heavy Duty): 100-160 mm cases, ±1.0% accuracy.
IMPS Series (Safety Pattern): Solid-front, explosion-proof.
IMPL Series (Low Pressure): 0-600 mbar range .
Options:
Adjustable pointer for calibration offsets.
Liquid-filled cases (specify glycerin or silicone oil).
Custom dial ranges (e.g., psi, kPa, bar).
7. Compliance and Quality Assurance
Standards: EN 837-1 (EU), ASME B40.1 (US).
Testing: Bubble leak test (standard); helium testing (optional).
Material Traceability: Full documentation per nuclear/chemical industry requirements (e.g., compatible with Curtiss-Wright nuclear qualification protocols) .
Conclusion
The Fisher 21B4037X022 pressure gauge exemplifies precision engineering for critical industrial applications. Its robust 316L stainless steel construction, adherence to EN/ASME standards, and customizable safety features make it ideal for high-pressure, corrosive, or safety-intensive environments. For detailed dimensional drawings, installation manuals, or nuclear qualification data (e.g., compatibility with Curtiss-Wright Qualified Parts Catalog), consult Fisher/Emerson technical support.
KeRui (Weifang) Automation Equipment Co., Ltd.Specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply to specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
Packaging & Shipping
The packaging and transportation of instrumentation in global trade hinges on a synergy of advanced materials, rigorous testing, regulatory compliance, and smart logistics. By adopting hybrid structural designs, leveraging real-time monitoring technologies, and prioritizing sustainability, exporters can ensure the safe, efficient, and cost-effective delivery of precision instruments. Continuous innovation in materials science and IoT integration will further redefine industry standards, enhancing resilience in an increasingly interconnected market.
FAQ
Q:How long will you give me the reply?
A: We will reply to you as soon as we see the information.
Q: What is the delivery time?
A: Our delivery time is within 3-7 days after we get your payment;
for large qty mass orders, the time should be confirmed again for you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.
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