Mark 978M Series Manual Sanitary Control Valve

Category:	Sanitary Control Valves
Application:	Pressure Control End of Loop Back Pressure Control Ambient POU Pressure Control Ambient POU Pressure Control on Buffer Dilution System Flow Control Distribution Loop and Sub-loop Flow Control Distribution Loop and Sub-loop Manual Flow Balance Control Pressure Control (USP PW) Flow Control (USP PW) Distribution Loop and Sub-loop Flow Control (USP PW) Distribution Loop and Sub-loop Manual Flow Balance Control (USPPW) Pressure Control (CS) CSG Header Pressure Control SIP Pressure Reduction Pressure Control (Buffer) Diluted Buffer BPR Downstream of Buffer/WFI Buffer Dilution Pump Pressure PRV POU Pressure Control (Buffer) TFE Rententate Back Pressure Control Chromatogrpahy Column Outlet Pressure Control Flow Control (Buffer) Buffer Distribution or POU Flow Control Chromatography Buffer Elution Flow Control Pressure Control (CIP) Diluted CIP BPR Downstream of Caustic/WFI Caustic Dilution Pump Pressure PRV POU Pressure Control (CIP) Flow Control (CIP) CIP Distribution or POU Flow Control (CIP) Pressure Control (CDAG) Vessel Blanketing Inlet Pressure Regulation Vessel Sparge Pressure Regulation Vessel Blanketing Vent Back Pressure Regulation POU Flow Control (CDAG) Flow Control (CDAG)
Media:	Buffer WFI USP PW Clean Steam CIP Clean Dry Air and Gas

Manual control, low to high flow, Jorlon diaphragm

Angle or inline style manual control valve, for manual precision control of media, process, purified water and clean utilities in the Biopharmaceutical, Pharmaceutical, Food & Beverage and Consumer Health & Beauty industries:

Bioreactor/Fermenter process input control, growth media, buffer, WFI, spare and blanket gas
Separation input and out control: WFI, process, product and waste streams
Purification input and output control, elution media, solvents buffer, WFI
Formulation/fill control: WFI and other vessel inputs, blanket gas, dosing pressure
Clean utilities: WFI, pure steam, CIP, clean compressed air & gas
F & B and consumer H & B process: inputs, outputs, purified water, and clean utilities

Features & Benefits

Stem position indication on bonnet allows repeatable stem positioning. Fine threads on bonnet and stem allow precise, manual process control
Specialized design of diaphragm seal and components allows ultra-high cycle life and lifetime diaphragm warranty
Jordan diaphragm – highest continuous steam pressure ratings on the market, full CIP/SIP capabilities
FDA & USP Class VI compliance standard on all process seal and seat materials
Self-draining – same draining characteristics as the MK978-JD
No guiding in the wetted area – prevents particulate generation
Mechanically polished internal components -20Ra (0,5 µm) finish, electropolish – standard; 9Ra optional
Wetted parts made of 100% ASTM A479 316L Stainless Steel barstock
Maintenance friendly – easy to perform sanitary maintenance with simple disassembly and reassembly

Specifications

Size: Angle and Inline body: 1/2″ through 2″ (DN15 through DN50)
End Connections: ASME, DIN and ISO tri-clamp, extended tube weld
Cv (Kv) & Flow Characteristics: 0.2 – 70 Cv (0,17 – 60,5* Kv), linear, quick opening or equal percentage trim characteristics (*modified linear)
Max. Pressure/Temperature: 150 psi (10,3 bar) at 100°F (38°C) dependent upon construction; 100 psi (6,9 bar) at 340°F (171°C) dependent upon construction
Body 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: ASTM A479 316L Stainless Steel, 20Ra (0,5µm) electropolish is standard, 8Ra (0,2µm) optional
Stem Seal – Diaphragm: Jorlon (1/2″ – 2″) all materials certified to FDA/USP Class VI
Soft Seat Option (Cv > 3.5 only): PTFE FDA/USP Class VI to 252°F (122°C) continuous or 275°F (135°C) in intermittent (<15 min over 1 hour); PEEK FDA/USP Class VI to 350°F (177°C)