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P.C. Engineering Corporation
Spirax Sarco SRV66HC High Capacity Sanitary Pressure Reducing Valve

Overview

The Spirax Sarco SRV66HC is a high-capacity, all-stainless steel sanitary pressure reducing valve engineered for hygienic process applications. This double-seated, spring-loaded proportional control valve delivers precise downstream pressure regulation without requiring an external pilot line.

Designed with an angle body configuration, the SRV66HC ensures complete draining with no dead pockets—making it fully compatible with Clean-In-Place (CIP) and Steam-In-Place (SIP) systems. The quick-release body clamp ring allows rapid disassembly for inspection and maintenance, minimising process downtime.

Constructed entirely from 316L stainless steel (1.4404) wetted parts with PTFE-protected FPM diaphragm, this valve meets stringent hygiene requirements for food processing, brewing, beverage, and pharmaceutical manufacturing environments. Valve tightness conforms to VDI/VDE guideline 2174 with leakage rate below 0.5% of Kvs value.

Key Features

  • All stainless steel construction – 316L (1.4404) wetted parts for corrosion resistance
  • Double-seated, high capacity design – handles large flow volumes with stable control
  • Self-acting operation – no external pilot line required
  • Angle body with full drainability – eliminates dead pockets, ideal for CIP/SIP
  • Quick-release clamp ring – fast disassembly for maintenance and inspection
  • Standard surface finish Ra < 3.2 µm – with options down to Ra 0.25 µm electropolished
  • Multiple end connection options – ISO 2852 clamp, ASME BPE, EN 1092 flanged, aseptic thread, weld spigots
  • Sealed bonnet option – available with leakage line for toxic or hazardous media

Specifications

ParameterValue
SizesDN25, DN40, DN50, DN65, DN80, DN100
Body MaterialStainless Steel 1.4404 (316L)
Diaphragm MaterialFPM (standard) or EPDM (optional)
SealsFEPM 75 elastomer
Inlet Pressure RatingPN16
Pressure Setting Ranges0.3–1.1 bar g / 0.8–2.5 bar g / 2.0–5.0 bar g
Max Operating Pressure (Inlet)8 bar g
Max Operating Temp (FPM)180°C
Max Operating Temp (EPDM)130°C
Min Operating Temperature-10°C
Standard Surface FinishRa < 3.2 µm
End ConnectionsISO 2852 sanitary clamp compatible
Valve TightnessPer VDI/VDE 2174 (< 0.5% Kvs leakage)
SizeDN25DN40DN50DN65DN80DN100
Kv at 20% offset3.116.916.946.253.961.6
Maximum Kv4.022.022.060.070.080.0
SizeABCWeight
DN251001383052.5
DN401152003456.5
DN501252003556.5
DN6517524069026.0
DN8017524069026.0
DN10017524069026.0

Applications

The SRV66HC is specifically designed for industries requiring hygienic pressure control:

- Food Processing – dairy, edible oils, sauces, and prepared foods - Brewing & Beverage – beer, soft drinks, juice processing lines - Pharmaceutical Manufacturing – sterile process systems, API production - Biotechnology – fermentation and bioprocessing systems - Cosmetics – cream, lotion, and personal care product manufacturing

Suitable for steam, gas, and liquid service in processes requiring CIP/SIP sterilisation and full traceability of wetted materials.

Frequently Asked Questions

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Spirax Sarco SRV66HC High Capacity Sanitary Pressure