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Mark 96 Series Sanitary Pressure Regulator

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Express Delivery available, less than 1 week!

  • Express delivery available, less than one week! (Some 3/4" - 1.5" models)
  • Best Accuracy (least droop -set point offset) in the industry
  • Clean-in-Place, Steam-in-Place – dome lock pin to allow CIP/SIP
  • No guiding surfaces in the fluid below the diaphragm in the wetted area. ASME BPE compliant

The Mark 96 series from Steriflow is a manual sanitary pressure regulator for low to high flow requirements.

Body materials and finish

Wetted materials are machined from 316L bar stock, resulting in no wetted parts being made from castings. No guiding surfaces in the fluid minimises particulate generation.

The mark 96 is available with a Jorlon diaphragm which offers a lifetime warranty, other diaphragm materials are also available dependant on process.

A manual CIP pin allows the user to lock the regulator in full open position during rinse/CIP/rinse cycle

Typical applications and uses

The Mark 96 is available as either an inline valve or angle style. The pressure reducing valve has a bolted body for purified water, clean utilities and media in the biopharmaceutical, pharmaceutical, food & beverage and consumer health & beauty industries including:

  • Clean steam, pressure reduction for SIP
  • Media prep: AWFI (ambient WFI) and buffer dilution
  • Bioreactor/fermenter process input control: AWFI, buffer, other additives
  • Separation input and output control: AWFI
  • Purification input and output control: AWFI, buffer
  • Clean utilities: USP PW, WFI, CIP, CCA, CCG
  • F & B and consumer H & B process: inputs, outputs, purified water and clean utilities

Features and benefits

Features and benefits - Mark 96 series from Steriflow is a manual sanitary pressure regulator


Common process applications and industrial uses include:

Pressure control

SIP pressure reduction

Pressure control (Buffer)

Buffer dilution pump pressure PRV

POU pressure control (Buffer)

Pressure control (CIP)

Caustic dilution pump pressure PRV

POU pressure control (CIP)

Pressure control (CDAG)

Distribution line primary pressure regulation

Other features

  • Size: 3/4″ through 3″ (DN20 through DN80)
  • End Connections: ASME, DIN and ISO Tri-Clamp, Extended Tube Weld
  • Cv & Flow Characteristic: 1.5 – 23 Cv (1,3 – 19,8 Kv)
  • Max. Pressure/Temperature: Dependent upon construction
  • Setpoint Range: 3 psi (0,2 bar) to 135 psi (9,3 bar); dependent on size and construction
  • Wetted Material: ASME SA479 316L (UNS 31603) is standard. EN 10272:2000 GR 1.4435, AL-6XN®, Hastelloy C-22 and others are optional
  • Surface Finish: ASME BPE SF5, 20Ra (0,5µm) electropolish is standard, 8Ra (0,2µm) optional
  • Diaphragm Material: Jorlon FDA, USP Class VI; EPDM/Nylon, FDA only; 316L (selection is size and Cv dependent)
  • Soft Seat Option: Jorlon, PEEK, Teflon (All FDA and USP Class VI)


The Mark 96 Series Sanitary Pressure Regulator is widely used in the following industries:

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