167D Valve Bulletin

Page 4

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

PRESSURE GAUGE

C B D

A A TYPE 657

C

B

1/4 NPT SUPPLY

COOLING TOWER PUMP PUMP DISCHARGE

WHISTLE

TO INSTRUMENT AIR SUPPLY 55 PSI (3,8 bar)

TYPE 67CFR 10C0622

AF8400

Figure 4. Typical 167D or 167DS Installation (Warning system using Type 167D or 167DS two-way valve to activate a whistle when pump discharge pressure falls.)

Figure 3. Typical 167DA or 167DAS Installation (Lockup system using T ype 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.)

Table 3. Construction Materials PART NAME BODY AND SPRING CASE

167D and 167DA

167DS and 167DAS

Aluminum (ASTM B85/Alloy 380)

CF8M/CF3M Stainless steel 316L Stainless steel

SPRING RETAINER

Aluminum

UPPER SPRING SEAT

Zinc-plated steel

DIAPHRAGM PLATE

Chromate conversion coated Aluminum

CONTROL SPRING

Zinc-plated steel and Chrome Silicon

VALVE STEM

Brass or Aluminum

VALVE PLUG

Brass or 316L Stainless steel

316 Stainless steel Inconel速 316L Stainless steel

VALVE SPRING

302 Stainless steel or Inconel速 (NACE)

DIAPHRAGM, O-RINGS, AND SOFT SEAT

Nitrile (NBR) or Fluorocarbon (FKM)

BOLTING, ADJUSTING SCREW

Zinc-plated steel

HEXNUT

Zinc-plated steel or 316 Stainless steel

HANDWHEEL

4

TYPES

Zinc-plated steel or 316 Stainless steel

Zinc-plated steel screw with resin handwheel

316 Stainless steel


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167D Valve Bulletin by RMC Process Controls & Filtration, LLC. - Issuu