| Parts of Double-side Liquid Filled Pressure Gauge | Product Type Illustration | Single-side、Double-side Gaseous Diaphragm Pressure Gauge |
| Double-side Liquid Filled Pressure Gauge | Double-side All Stainless Pressure Gauge | Double-side P.P Diaphragm Pressure Gauge |
| Liquid Filled PP Diaphragm Pressure Gauge or Contactor Attached PP Diaphragm Pressure Gauge | Diaphragm Pressure Gauges |
| Pressure Gauges, Vacuum Gauges, Compound Gauge With Electrical Connection | Liquid Filled Pressure Gauge | Steam Liquid Filled Pressure Gauge |
| Stainless Steel Pressure Gauge | Liquid Filled Refrigeration Pressure Gauge | Refrigeration Pressure Gauge | General Industrial Service Pressure Gauge |
| All Brass Steam Pressure Gauge | Steam Pressure Gauge | Contractor Gauge | Ammonia Refrigerant Gauge | Welding and Compressed Gas Regulator Gauge |
| Stainless Steel Micro Pressure Gauges, Vacuum Gauges | Micro Pressure Gauges, Vacuum Gauges | Differential Gauge, Differential Indicator Switch |
Accessories | Standard Graduation | Pressure Conversion Table | Installation | | Pressure Elements |

Differential Gauge, Differential Indicator Switch
Type SPP175
Apply Simple sliding indicator shows green for clean and red to indicate dirty filter element. Can be seen easily from both sides.
Feature
顏色
COLOR
表示
INDICATES

PRESSURE

DROP
CLEAN/乾淨 0-6 PSI
DIRTY/污染 9-12 PSI
Differential Gauge, Differential Indicator Switch
Type
SPP973 SPP974 SPP975
Apply Allows exact determination of pressure drop across element. Divided into three sections. Each marked for easy understanding. The Pressure gauge is the best tool available for determining element maintenance requirements.
Feature
顏色
COLOR
表示
INDICATES

PRESSURE

DROP
CLEAN/乾淨 0-6 PSI
CHANGE/更換 6-9 PSI
DIRTY/污染 9-12 PSI