Suitable for heavy operating conditions. Resistant to vibrations and pulsating pressures when liquid filled. The series main contain follow general. Specification: 1. Case Sizes: 2.5", 4", 6" 2. Pressure Range: With range from 30inHg(vacuum) through 15000psi 3. Bourdon Tube: With SUS316 material, range from vacuum through 1000psi in C-form, soft soldered, range above 1500psi in helical, silver soldered 4. Movement: With SUS304 stainless steel standard material 5. Cases and Ring: With SUS304 staunless steel material, the ring which retains the window is flat bayonet threaded type, dull or polished case and ring 6. Blow Out Disk: Fitted as standard 7. Connection: With SUS304 stainless steel standard material, bottom mounting and backside mounting available, 1/8", 1/4", 1/2", 3/8"PT, NPT, BSP are the standard threads, available for suitable dial diameter. 8. Dials: Dials are uniformly graduated and have highly legible black markings. In single scale(psi, bar Kpa, Mpa, or kg/cm2) or dual scales as request Windows(Lens): PC, tempered glass or safety glass. 9. Liquid Filling: With or without liquid, 99.5%glycerine. Others available 10. Pointer: With a fixed pointer or with micro adjustable 11. Accuracy: By 1.6cl or 1.0cl 12. Options: Many different styles and materials are offered, open gauges with and without device and solid front or back flange gauges or with U-clamp. Custom dial face, special connections, e-mail us or our distributor your logo or draw for special connection.