Pneumatic control valve 988 CASHCO
The Model 988 is a globe-style, pneumatic control valve designed primarily for general and chemical service. The valve’s body/trim materials are available in WCB/316L SST, CF3M/316L SST, or CW-12MW/Hast. C constructions.
Standard trim is metal seated design giving Class IV shutoff. Optional composition seat design gives Class VI shutoff. Available in body sizes 3/4″ through 2″ (DN20–DN50). End connections available are NPT, socketweld or flanged.
Key Features:
- All wetted trim components of 316L SST or Hastelloy C.
- Dual stem guiding: improved shutoff, increased packing life, maximized stability.
- Standard internally live-loaded V-ring packing.
- Multiple packing designs to meet reduced fugitive emission levels.
- Flow-to-open design for increased: rangeability and stability.
Pneumatic control valve 988
| Maximum Allowable Working Pressure | Up To 1480 psig (102 Barg) |
| Line Sizes Pneumatic control valve |
3/4″ (DN20) 1″ (DN25) 1-1/2″ (DN40) 2″ (DN50) |
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End Connections
|
Female NPT – All sizes and materials only. F-to-F dimensions per ISA S75.08-03. Socket Weld – All sizes; CS and SST body materials only. F-to-F dimensions per ISA S75.08.03. Flanged – All sizes and body materials. Separable Type; standard is CS flanges and CS split rings, optional SST. |
|
Body Materials
|
Carbon Steel Stainless Steel H-C: Hastelloy C |
- Quick change trim.
- High pressure drop capability, up to 1480 psid (102.0 Bard).
- Multiple reduced trim selections.
- Equal percent or linear characterization.
- External corrosion protection.
- Face-to-Face dimensions – ISA 75.08.07 (“Long Pattern”).
- Standard Actuator compliant with IEC 60534-6-1 for mounting standardized positioners.
