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VANTEQINDUSTRIAL
Valves / CS-310

Series CS-310 Pressure Reducing Valve

VQ-CS310

Check and safety valve, sizes DN25 to DN200, set pressure 0.5 to 16 bar downstream.

SIZES
DN25 to DN200
SET PRESSURE
0.5 to 16 bar downstream
RATING
PN25
TEMPERATURE
-10 to +220 °C

Why it is specified

The valves nobody looks at until the day they matter. Sized on the relieving case rather than on the line, and quoted with the set pressure, the required capacity and the back-pressure assumption stated.

Typical applications

  • Compressor protection
  • Pump discharge non-return
  • Thermal relief on isolated lines
  • Vessel and boiler protection

Options and executions

  • Bellows for back-pressure
  • Lifting lever, plain or packed
  • Soft seat for tight shut-off
  • Test certificate with the set pressure
Specification

The full table.

Figures cover the whole series. The variant table below narrows them to a part number.

PERFORMANCE

Set pressure range
0.5 to 16 bar downstream
Capacity
Kv 6 to 420 m³/h
Blowdown
Proportional band 10 per cent
Seat tightness
Class IV to IEC 60534-4

MATERIALS

Body
EN-GJS-400-15 ductile iron
Internals
1.4404 stainless seat and plug
Spring
Adjustable range spring
Seat
Metal, stellited

CONNECTIONS AND RATINGS

Sizes
DN25 to DN200
Connections
EN 1092-1 flanged
Pressure rating
PN25
Temperature range
-10 to +220 °C
Mounting
Horizontal, pilot uppermost
Variants and part numbers

Stocked frame sizes.

PART NUMBERSIZESET PRESSUREBODYSEAT
VQ-CS310-10DN250.5 to 8 barEN-GJS-400-15 ductile ironMetal, stellited
VQ-CS310-20DN801 to 12 barEN-GJS-400-15 ductile ironMetal, stellited
VQ-CS310-30DN2001 to 16 barEN-GJS-400-15 ductile ironMetal, stellited
Datasheet

CS-310, DS-CS-310

  • Document DS-CS-310
  • Revision Rev 1
  • Issued 2026
  • Pages 6

The datasheet is issued with the selection rather than downloaded blind, so the figures that arrive are the ones for your duty point. Ask for it with the quotation and it comes back as a PDF.

What is in it

  • Selection data and the limits each figure applies at
  • Dimensional drawings for every size in the variant table
  • Materials of construction and the compatibility notes
  • Installation, commissioning and maintenance intervals
  • Spare parts list with the part numbers
Next step

Quote the CS-310 for your duty.

Send the process data and the line size. The quotation comes back with the selection, the calculation and the lead time on the stocked variants.

Vanteq Industrial is a fictional company created for demonstration purposes. This product does not exist. The specifications, performance figures, materials and datasheet references on this page are illustrative and must not be used to select, size or buy equipment.