167D Series Switching Valves TYPE 167D TWO-WAY SWITCHING VALVE TYPE 167DA THREE-WAY SWITCHING VALVE Figure 1. 167D Series Switching Valves The 167D Series switching valves are typically used to deliver constant reduced pressure of gaseous fluids to pilot-operated controllers and other pneumatic instrumentation. switching valves. switching valves. switching valves are engineered for outstanding performance in a compact, lightweight package. • Easy, Accurate Adjustment—With a choice of springs for optimum resolution, the switching point is set to a specific requirement by an adjusting screw atop the spring case. • Sour Gas Service Capability—NACE MR0175 and MR0103 compliant construction available. • Optional Stainless Steel Construction— The Types 167DS and 167DAS provide high resistance to corrosion especially beneficial for offshore applications. • Ease of Maintenance—No special tools are required to perform maintenance, and all maintenance can be performed with the • Rugged Construction—The Types 167D and 167DA switching valves are engineered for longer service life with minimal maintenance requirements. • Corrosion Resistant Fasteners—Bolting and adjusting screw are double zinc-chromated for enhanced corrosion resistance. Optional stainless steel bolting and adjusting screw are also available. Process Management

Available Configurations switching valves switching valves Body Size, Inlet, and Outlet Connection Style Vent and Control Pressure Connections Construction Materials Maximum Operating Inlet Pressure^) Types 167DA and 167DAS (NACE): 100 psig / 6,9 bar Maximum Diaphragm Pressure^) 150 psi /10,3 bar over outlet pressure setting up Flow and Sizing Coefficients Spring Case Vent Location Aligned with inlet standard, other positions optional Standard Service (Types 167D and 167DA only): Low Temperature Service (Types 167D and 167DA only) and Standard Service (Types 167DS and High Temperature Service:...

SSURE E SSURE SSURE ED PRESSURE ESSURE E Bulletin 71.7:167D ADJUSTING SCREW ADJUSTING SCREW CONTROL SPRING DIAPHRAGM CONTROL SPRING O-RING SOFT SEAT DIAPHRAGM O-RING PORT C PORT A VALVE STEM BODY PORT A PORT C VALVE PLUG ORIFICE SEAT VALVE SPRING VALVE STEM BODY VALVE PLUG ORIFICE SEAT M1152 VALVE SPRING M1151 PORT B INLET PRESSURE TYPE 167D TWO-WAY SWITCHING VALVE TYPE 167DA THREE-WAY SWITCHING VALVE OUTLET PRESSURE (WHEN LOADING PRESSURE IS LESS THAN SETPOINT) OUTLET PRESSURE (WHEN LOADING PRESSURE IS EQUAL TO OR GREATER THAN SETPOINT) ATMOSPHERIC PRESSURE INLET PRESSURE INLET PRESSURE LOADING...

Table 1. Three-Way Switching Valves Set Pressure Ranges and Control Spring Data Table 2. Two-Way Switching Valves Set Pressure Ranges and Control Spring Data Table 3. Flow and Sizing Coefficients Table 4. Construction Materials Inconel® is a mark owned by Special Metals Corporation.

Bulletin 71.7:167D TYPE 167DA OR 167DAS TYPE 167D OR 167DS SWITCHING VALVE SET TO OPEN AT 5 PSI / 0,34 bar D TYPE DVC6010 A B PRESSURE GAUGE C D A A TYPE 657 C B 1/4 NPT SUPPLY COOLING TOWER PUMP TYPE 67CFR AF8400 Figure 3. Typical 167DA or 167DAS Installation (Lockup system using Type 167DA or 167DAS to close air circuit to diaphragm of main valve in case of plant air failure. Main valve will remain in position it occupied at time of supply pressure failure.) TYPE 167DA OR 167DS A B C S 1 3 Figure 4. Typical 167D or 167DS Installation (Warning system using Type 167D or 167DS two-way valve to...

Bulletin 71.7:167D 2.98 / 76 2.98 / 76 1.49 / 38 1.49 / 38 VENT 3.69 / 94 MAX VENT 3.66 / 93 MAX SIDE OUTLET 1/4 NPT SIDE OUTLET 1/4 NPT 2.35 / 60 2.78 / 71 2.75 / 70 2.75 / 70 0.63 / 16 INLET CONNECTION 1/2 NPT AND OPTIONAL 1/4 NPT 0.63 / 16 OUTLET CONNECTION 1/2 NPT AND OPTIONAL 1/4 NPT INLET CONNECTION 1/2 NPT AND OPTIONAL 1/4 NPT OUTLET CONNECTION 1/2 NPT AND OPTIONAL 1/4 NPT INCHES / mm GG01159 GG02448 167DA SERIES Figure 7. 167D Series Dimensions 6 167D SERIES

Ordering Guide □ 167DS (two-way, stainless steel)*** □ 167DAS (three-way, stainless steel)*** Body Size (Ports A and C) (Select One) Quantity (Specify)_ Spring Case Style (Select One) □ Drilled hole vent (Types 167D and 167DA standard)* □ Single hole panel mount*** Adjusting Screw (Select One) □ Square head (Types 167D and 167DA standard)*** □ Square head with closing cap Set Pressure Range (Select One) Three-Way Switching Valve 1. Product complies with the material requirements of NACE MR0175. Environmental Set Pressure Range (Select One) (continued) Two-Way Switching Valve □ 3 to 15 psig /...

Industrial Regulators Emerson Process Management Middle East and Africa Dubai, United Arab Emirates Emerson Process Management Emerson Process Management Tescom Corporation For further information visit www.fisherregulators.com The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls, Inc., a business of Emerson Process Management The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy they...