Import Ammonia Vacuum Pressure Gauge — Buy in wholesale FOB from Supplier in China

This ammonia vacuum pressure gauge is manufactured by Qingdao J&K Co., Ltd., a Shandong-based instrument maker with a 14,000 sqm production facility and 300 workers. The gauge is engineered specifically for ammonia (NH3) refrigeration systems, combining vacuum and pressure measurement in a single dial to monitor both suction and discharge conditions. The exact dial size, connection thread, and vacuum/pressure range should be confirmed directly with the supplier, as these vary by model configuration.

The wetted parts are typically constructed from ammonia-compatible materials, standard for this product category: stainless steel 316L or brass with ammonia-resistant seals to prevent stress corrosion cracking. The bourdon tube or diaphragm sensing element is selected for compatibility with anhydrous ammonia, which attacks copper alloys and certain elastomers. Typical accuracy class for industrial ammonia gauges is 1.0% or 1.6% of full scale (standard), with IP65 or IP67 ingress protection depending on enclosure specification. The supplier notes OEM capability, suggesting custom dial markings, ranges, and process connections are available.

Buyers for this product include industrial refrigeration contractors, cold storage facility operators, ammonia compressor pack manufacturers, and HVAC-R system integrators. The gauge serves as a critical safety and performance instrument in large-scale food processing, ice manufacturing, and chemical plant cooling systems. Before ordering, confirm the connection size (typically 1/2 inch NPT or BSP, standard), mounting orientation, and whether a glycerine-filled case is required for vibration damping. The supplier's stated 30-plus years of pressure gauge specialisation suggests established production, though the zero percent response rate indicates all commercial terms require direct enquiry.

Qingdao J&K Co., Ltd. operates from 735 Jinshui Road in Licang District, Qingdao, Shandong Province, with a registered facility of 14,000 sqm and 300 skilled workers. The company identifies itself as a subsidiary of J&K Group, founded in 1989, and positions its core business in pressure gauges, regulators, and welding-cutting torches. Its trust tier is classified as harbour, and both response rate and average response hours register at zero, meaning buyers should expect to initiate contact and await reply rather than rely on rapid quotation.

The supplier claims status as one of the largest machine accessories suppliers in northern China, though this description is self-stated and not independently verified in the provided data. The listing emphasises OEM welcome, small quantity order acceptance, and a quality control and inspection system, but provides no detail on certifications, export licence, or specific compliance with ASME, EN, or GB standards for pressure instruments. What the profile does not state is as telling as what it does: no ISO certification is mentioned, no named clients, no annual revenue, and no dedicated after-sales service structure. Buyers should verify these gaps directly before committing.