PR-59 Series
High Pressure Regulator

Designed for low and high pressures up to 4000 psig inlet the PR-59 Series pressure reducing regulator controls high flows with its Cv flow coefficient of 1.2.

While primarily designed for use with gas streams the PR-59 can be used with any liquid systems that are compatible with the seals. A large size piston sensor gives good sensitivity of control even at low outlet pressures and a balanced poppet design assures exceptional regulator accuracy.

  • Gas or liquid service
  • 316L stainless steel construction
  • Better than 25 Ra finish in diaphragm cavity
  • Stainless steel piston sensor
  • Balanced poppet
  • Viton® seals (other elastomers optional)
  • Bubble tight shutoff
  • Outlet pressure ranges are 250, 500, 750, 1000, 2000 and 4000 psig
  • Proof pressure is 2 times maximum working pressure
  • Burst pressure is 4 times maximum working pressure
  • Weight: 9.2 lbs (4.18 kg)
  • Mounting style is surface or panel (see Outline and mounting dimensions)

Maximum Temperature & Operating Inlet Pressures

Seat Material

Maximum Temperature

Maximum Operating Inlet Pressure

PCTFE 175º F (80º C) @ 4000 psig (27.58 MPa)
PTFE 150º F (66º C) @ 1000 psig (6.90 MPa)


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