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Web: www.grandmfgcn.com Fused glass style sight windows, sight glass and sight gauge. Feature glass to metal bond for utmost reliability. Plated steel bodies have convenient hex wrench surface. Connection are Standard NPT and BSP(G thread) from 1/4" to 2". Windows are clear, ripple free, and flush with the front face, Having no recess on which dirt might collect. Specifications: Service: Compatible gases and liquids. Window: nature glass. Body: plated steed and stainless steel. Temperature: -30'C to 260 'C (500 ‘F). Pressure: 125 psig (8.6bar) Connections: NPT and BSP (G thread) Size: 1/4" to 2" MOQ: 1000 Pcs each size Delivery time: 20 days. Usage:  Pump Gearboxes, Speed Reducer, Compressor and Power Transmission.