Case of pressure gauge

The choice of material is critical for durability. Stainless Steel (SS 304/316) is the industry standard for corrosive environments and food-grade applications due to its high oxidation resistance. For general industrial use, Black Steel or Painted Steel offers a cost-effective solution, while Phenolic (Plastic) cases are preferred in chemical plants to prevent external corrosion. Always ensure the material matches the IP Rating (e.g., IP65 or IP67) required for moisture and dust protection.

Standard nominal sizes range from 40mm to 250mm. You must specify the mounting configuration: Bottom Mount, Back Mount, or U-clamp/Flange Mount for panel installations. For high-vibration environments, ensure the case is designed to be Liquid-Filled (Glycerin or Silicone), which requires a blow-out plug and a sealed casing to dampen internal movement and extend the gauge's lifespan.

Ensure the manufacturer adheres to EN 837-1 or ASME B40.100 standards. For high-pressure applications, a Safety Glass window and a Solid Front (S3) design with a blow-out back are mandatory to protect operators in the event of a tube rupture. Verify that the supplier provides Material Test Reports (MTRs) and compliance certificates like CE or RoHS for international market entry.

Yes, professional suppliers on Made-in-China.com offer OEM services. This includes custom dial printing (logos, dual scales), specific RAL color powder coating for the case, and specialized connection threads (NPT, BSP, or Metric). For large-scale projects, request CAD drawings for approval before mass production to ensure integration with existing machinery.

Request a Pre-Shipment Inspection (PSI) to verify the dimensional accuracy and surface finish. Use the Secured Trading Services provided by Made-in-China.com to ensure payment is only released upon confirmation of quality. It is also advisable to perform a Salt Spray Test report review to confirm the anti-corrosion capabilities of the plating or coating.

Focus on Total Cost of Ownership (TCO). While the unit price is important, negotiate for better packaging to prevent scratches during transit. For recurring orders, propose a blanket purchase order to secure lower tiered pricing (often 15-20% discounts for volumes over 5,000 units) while maintaining a flexible shipping schedule.

Pressure gauge cases are heavy and prone to denting. Insist on double-corrugated export cartons and palletization with shrink wrap. If the cases include glass windows, ensure EPE foam inserts are used. For shipping to the US or EU, clarify the Incoterms (FOB or DDP) and ensure all wooden pallets are ISPM 15 heat-treated to avoid customs delays.