WIKA Flanged Process Connection Diaphragm Seal, Model 990.12
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Model 990.12 Flanged Process Connection Diaphragm Seal

Brand: WIKA Instruments Ltd.

Threaded Design.
Features
  • Flanged process connection per EN/ASME (NPS) ½", ¾", 1" or DN 15, 20, 25
  • Design with internal diaphragm and diaphragm bed, upper and lower housing threaded
  • Wide variety of special materials

Specifications

Brand

Gasket Material

  • VI = Viton®
  • BN = Buna “N”
  • TF = Teflon®, virgin
  • AS = Stainless steel, silver-plated

Diaphragm Material

  • SS = 316L stainless steel
  • MO = Monel® 400
  • HB = Hastelloy® B-2
  • HC = Hastelloy® C-276
  • PF = 316 stainless steel, Teflon® coated
  • TF = 316 stainless steel, virgin Teflon® lined
  • TA = Tantalum
  • TI = Titanium, grade 2
  • NI = Nickel 200
  • IN = Inconel® 600
  • IC = Incoloy® 825
  • CA = Carpenter® 20
  • SA = 316 Stainless Steel, Gold-Plated
  • VI = Viton®

Clamp & Support Material

  • CS = Carbon Steel, zinc-plated
  • SS = Stainless steel
  • HS = High temperature stainless stee

Flushing Connection

  • 0 = None
  • 1 = 1/8” NPT female
  • 2 = 1/4” NPT female

Lower Housing Material

  • CW = Carbon steel, nickel-plated Teflon® lined, virgin
  • SC = 316 stainless steel, Teflon® lined, carbon
  • SW = 316 stainless steel, Teflon® lined, white
  • TC = Carbon steel, nickel-plated,Teflon® coated
  • TS = 316 stainless steel, Teflon® coated
  • TA = Tantalum
  • TI = Titanium, grade 2
  • NI = Nickel 200
  • IN = Inconel® 600
  • IC = Incoloy® 825
  • CA = Carpenter® 20
  • CC = Carbon steel, nickel-plated Teflon® lined, carbon
  • HC = Hastelloy® C-276
  • MO = Monel® 400
  • CS = Carbon steel, nickel-plated
  • SS = 316L stainless steel
  • HB = Hastelloy® B-2

Upper Housing Material

  • CS = Carbon steel, nickel-plated
  • SS = 316L stainless steel
  • TI = Titanium, grade 2

Flange Rating

  • 150R = 150#RF
  • 300R = 300#RF
  • 600R = 600#RF
  • 15XR = 900#/1500#RF

Process Connection

  • 1.0 = 1” Pipe
  • 1/2 = 1/2” Pipe
  • 3/4 = 3/4” Pipe
  • 1.5 = 1.5” Pipe
  • 2.0 = 2” Pipe

Instrument Connection

  • 1/4 = 1/4” NPT female
  • 1/2 = 1/2” NPT female
  • CPL = Capillary connection

Diaphragm Seal Design

  • L990.12 = Welded Diaphragm

Documentation

Data Sheet

Operating Instructions

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