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  • Features a flush mount diaphragm and all welded construction, ideal for food & beverage, pharmaceutical and sanitary markets
  • Can be used for remote mounting of pressure instrument(s) with capillary, see options & accessories below
  • Wetted parts and all welded housing are constructed of 316 Stainless Steel for greater strength and durability
  • Accommodates process connection pipes from 1-1/2" through 3" sizes
  • Clamped connection allows ease of installation and removal of seal for maintenance and cleaning
Type 12 Sanitary, Clamped-Style, American Society of Mechanical Engineers - Bioprocessing Equipment (ASME-BPE), Non-Replaceable Diaphragm Seals
Unit of Measure
Items Type 12 Sanitary, Clamped-Style, American Society of Mechanical Engineers - Bioprocessing Equipment (ASME-BPE), Non-Replaceable Diaphragm Seals
12-02S-S-12
1/4" National Pipe Thread (NPT) Instrument Connection, 316 Stainless Steel Type 12 Diaphragm Seal with 316 Stainless Steel Diaphragm and 1-1/2" Sanitary Pipe
Type 12 Sanitary, Clamped-Style, American Society of Mechanical Engineers - Bioprocessing Equipment (ASME-BPE), Non-Replaceable Diaphragm Seals
12-02S-S-16
1/4" National Pipe Thread (NPT) Instrument Connection, 316 Stainless Steel Type 12 Diaphragm Seal with 316 Stainless Steel Diaphragm and 2" Sanitary Pipe
Type 12 Sanitary, Clamped-Style, American Society of Mechanical Engineers - Bioprocessing Equipment (ASME-BPE), Non-Replaceable Diaphragm Seals
12-04S-S-12
1/2" National Pipe Thread (NPT) Instrument Connection, 316 Stainless Steel Type 12 Diaphragm Seal with 316 Stainless Steel Diaphragm and 1-1/2" Sanitary Pipe
Type 12 Sanitary, Clamped-Style, American Society of Mechanical Engineers - Bioprocessing Equipment (ASME-BPE), Non-Replaceable Diaphragm Seals
12-04S-S-16
2 in. Sanitary Pipe Size, Clamped-Style, American Society of Mechanical Engineers - Bioprocessing Equipment (ASME-BPE), Non-Replaceable Type 12 Sanitary Diaphragm Seal
Description N/A
  • Features a flush mount diaphragm and all welded construction, ideal for food & beverage, pharmaceutical and sanitary markets
  • Can be used for remote mounting of pressure instrument(s) with capillary, see options & accessories below
  • Wetted parts and all welded housing are constructed of 316 Stainless Steel for greater strength and durability
  • Accommodates process connection pipes from 1-1/2" through 3" sizes
  • Clamped connection allows ease of installation and removal of seal for maintenance and cleaning
Type N/A Diaphragm Seal
Style N/A Non-Replaceable Diaphragm Seal
Instrument Connection Size N/A 1/4 in N/A 1/4 in N/A 1/2 in N/A 1/2 in
Instrument Connection Type N/A National Pipe Thread (NPT)
Upper Housing Material N/A 316 Stainless Steel
Diaphragm Material N/A 316 Stainless Steel
Sanitary Pipe Sizes N/A 1-1/2 in N/A 2 in N/A 1-1/2 in N/A 2 in
Process Connection N/A National Pipe Thread (NPT)
Seal Type N/A Sanitary clamp, welded diaphragm
Pressure [Max] N/A Determined by the clamping device and piping system.
Instrument Type N/A Gauges, Transducers, Switches
Instrument Gauge Size N/A 2-1/2 to 4 in
Pressure [Min] for Gauges 2-1/2 to 4 in. Size N/A 0 to 30 psig
Pressure [Min] for Transducers N/A 0 to 30 psig
Pressure [Min] for Switches N/A 0 to 30 psig
Upper Housing Type N/A Continuous Duty
Diaphragm Size N/A 1.4 in N/A 1.9 in N/A 1.4 in N/A 1.9 in
Diaphragm Displacement N/A 190 mm³ N/A 490 mm³ N/A 190 mm³ N/A 490 mm³
O-Ring Temperature Limits for Nitrile Butadiene Rubber (NBR) Material N/A -40 to 250 ºF
O-Ring Temperature Limits for Polytetrafluoroethylene (PTFE) Material N/A -400 to 400 ºF
O-Ring Temperature Limits for Fluorocarbon (FKM) Material N/A -10 to 400 ºF
Diaphragm Pressure Limits for Polytetrafluoroethylene (PTFE) Material N/A 2,000 psi
Diaphragm Pressure Limits for Fluorocarbon (FKM) Material N/A 2,000 psi
Diaphragm Temperature Limits for Polytetrafluoroethylene (PTFE) Material N/A -40 to 400 ºF
Diaphragm Temperature Limits for Fluorocarbon (FKM) Material N/A -10 to 400 ºF
Note for Diaphragm Pressure and Temperature Limits N/A Metallic diaphragms determined by pressure range of seal type, restricted to temperature range of fill fluid.
Maximum Pressure Limits for Glass Transition Temperature (Tg), Tetoron Cotton (TC) Bottom Housing Material N/A 200 psi
Maximum Pressure Limits for Polyvinylidene Fluoride (PVDF) Bottom Housing Material N/A 200 psi
Maximum Pressure Limits for Polyvinyl Chloride (PVC) Bottom Housing Material N/A 80 psi125 psi200 psi
Maximum Pressure Limits for Polypropylene (PP) Bottom Housing Material N/A 200 psi
Maximum Temperature Limits for Glass Transition Temperature (Tg), Tetoron Cotton (TC) Bottom Housing Material N/A 150 ºF
Maximum Temperature Limits for Polyvinylidene Fluoride (PVDF) Bottom Housing Material N/A 180 ºF
Maximum Temperature Limits for Polyvinyl Chloride (PVC) Bottom Housing Material N/A 74 ºF125 ºF150 ºF
Maximum Temperature Limits for Polypropylene (PP) Bottom Housing Material N/A 140 ºF
Note for Maximum Pressure and Temperature Limits Bottom Housing Material N/A Metallic lower housings determined by pressure range of seal type, restricted to temperature range of fill fluid.
Application N/A
  • Water and wastewater
  • Oil and gas
  • Petrochemical
  • Chemical processing
  • Industrial automation
  • Food and beverage
  • Marine
  • Agriculture
  • Steel fabrication
  • Mud pumping
  • Pharmaceutical
  • Pulp and paper
  • Pneumatic
Additional Information N/A
  • Wetted materials electropolished to 32 μ Ra or better
  • Consider instrument size, pressure range, media composition, ambient and operating temperature, and maximum working pressure when selecting
  • Capillaries and cooling elements are available for elevated process temperatures, see options & accessories below
  • Fill fluid must be compatible with process media; i.e. Glycerin may become volatile in conjunction with a strong oxidizing agent such as chlorine, forms of oxygen or peroxide and nitric acids
Prop 65 Warnings N/A
WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer.  For more information go to www.P65Warnings.ca.gov
Cooling Elements N/A
  • 1/4" NPT x 1/4" NPT Cooling Element (1/4" NPT x 1/4" NPT-CE)
  • 1/2" NPT x 1/2" NPT Cooling Element (1/2" NPT x 1/2" NPT-CE)
  • Works in combination with diaphragm seal to isolate instrument from high media temperatures
  • Recommended for process temperatures above 212 ºF
  • Requires direct mounted system
  • Effective temperature reductions of 200 ºF depending upon ambient conditions
  • High > 212 ºF process temperature, low < -40 ºF process temperature
  • All Stainless Steel construction
Diaphragm Seal Fill Options N/A
  • Glycerin (GY) Not recommended for use in vacuum applications.)
  • Silicone (SL)
  • Halocarbon® (HL)
  • Neobee M20 (NB)
  • Mineral Oil (MO)
  • Propylene Glycol (PG)
Distribution Manifolds N/A NOSHOK's Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.
Plain and Armored Capillaries N/A
  • 5 ft. SS Armored Flexible Capillary, 1/4" NPT (AC-02-02-5) per ft. adder (AC-02-02-#)
  • 5 ft. SS Armored Flexible Capillary, 1/2" NPT (AC-04-04-5) per ft. adder (AC-04-04-#)
  • Stainless Steel capillaries available with or without Stainless Steel armor
  • Protects the instrument from high or low process temperatures
  • Allows remote mounting of pressure instrument(s)
  • Select the shortest capillary length possible, as changes in ambient temperature conditions may significantly affect the accuracy and response time of the instrument
  • Standard length 5', others available
  • Installation on analog gauges requires a gauge support and gauge adaptor, or other surface mounting provisions
  • Any level difference between the instrument and the seal will result in a pressure indication error; make sure to compensate for the level difference during calibration of the diaphragm seal assembly if the level difference is known
  • Filling options for capillaries
    • Silicone - specify to 10 or 20 feet (SL-C)
    • Halocarbon® - specify to 10 or 20 feet (HL-C)
Sanitary Clamps and Gaskets N/A
  • Clamp-style fittings are constructed of T304 Stainless Steel; T316 Stainless Steel on request
  • Double hinge design for easy installation and removal
  • Available in sizes from 3/4" to 4"
  • Standard pressure rating of 500 psi at 70 ºF (21 ºC); up to 3,000 psi rating on request
  • Clamp gaskets are available in NBR, EPDM, PTFE and FKM
  • All clamps and gaskets meet FDA and 3A sanitary standards
ASME-BPE Sanitary Clamp
1-1/2" (CR 12)
2" (CR 16)
2-1/2" (CR 20)
3" (CR 24)

NBR Gasket
1-1/2" (BG 12)
2" (BG 16)
2-1/2" (BG 20)
3" (BG 24)

PTFE Gasket
1-1/2" (TG 12)
2" (TG 16)
2-1/2" (TG 20)
3" (TG 24)
Stock N/A Yes