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Precision Metering Valve (PMV)

Precision Metering Valve (PMV)

Precision Metering Valve (PMV)

Product catalog summary
Description
Series PMV Precision Metering Valves are engineered for precise and repeatable flow control of fluids and gases. They feature a one-piece forged body and a screwed bonnet design, with a stainless steel tapered stem that seals tightly into an Acetal soft seat. These valves are cost-effective solutions for precise metering, offering panel mounting and lockable adjustment as standard features.

Features
  • Straight or Angle Flow Patterns
  • Forged Body in Brass or Stainless Steel
  • NPT or Dual Ferrule Tube Connections
  • Soft Seat for Positive Shut Off
  • Wear Compensating Knob Adjustment
  • Locking Screw to Prevent Flow Changes
  • Stem Threads Isolated from System Fluid
  • 100% Factory Tested for Leakage

Technical Data
  • Maximum Operating Pressure: 1000 Psig (68.9 Bar) at 100º F
  • Stem Taper: 3 Degree
  • Stem Pitch: 40 Threads per inch
  • Orifice: 0.055” (1.4 mm)
  • Flow Coefficient (Cv): 0.04
  • Panel Mount Hole: 9/16” (14.3 mm)
  • Max Panel Mount Thickness: 1/8" (3.3 mm)
  • Factory Preset for Zero Flow at Positive Stop with 150 Psig (10.34 Bar)
  • Temperature Range: Seal Dependent

Materials of Construction
  • Valve Body: Forged Brass (ASTM 377) or Forged 316 SS (ASTM A182)
  • Bonnet: Brass (ASTM B16, Nickel Plated) or 316 SS (ASTM A479)
  • Stem: 316 SS (ASTM A479)
  • Knob and Panel Nut: Brass (ASTM B16, Nickel Plated)
  • Seat Insert: Acetal CoPolymer (ASTM D4181)
  • O-Ring: Buna-N, Neoprene, Ethylene Propylene, or Viton®
  • Set Screw: 18-8 SS (ASTM A182), Nickel Plating per ASTM B689
  • Stem Threads and O-Rings Lubricated with Krytox®

Dimensional Data
Dimensions are provided for various configurations, including straight and angle flow patterns, with specific measurements for inlet and outlet configurations. All valve bodies are 3/4" (19 mm) wide, and dimensions are subject to change.

Flow Coefficient (Cv) at Turns Open
The flow coefficient increases with the number of turns open, with a maximum Cv of 0.04. Valves may require up to one full turn before flow is evident.

How To Order
Proper component selection is crucial, considering the total system design to ensure safe and trouble-free performance. The system designer is responsible for the intended component function, materials compatibility, pressure ratings, installation, environment, and maintenance.

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Catalog excerpts

Precision Metering Valve (PMV)-1

PRECISION METERING VALVE 1/8" and 1/4" NPT 1/8" and 1/4" Dual Ferrule Tube Vacuum - 1000 Psig (68.9 Bar) Description Series PMV Precision Metering Valves are designed for accurate and repeatable flow control of fluids and gases. Valves feature a one-piece forged body and a screwed bonnet design. Stainless steel 3 degree tapered stem seals bubble tight into an Acetal soft seat. With panel mounting and lockable adjustment standard, these valves offer cost effective solutions for precise metering. Straight or Angle Flow Patterns Forged Body Brass or Stainless Steel Construction NPT or Dual Ferrule Tube Connections Unique Soft Seat Provides Positive Shut Off Wear Compensating Knob Adjustment Locking Screw Prevents Inadvertent Flow Changes Stem Threads are isolated from System Fluid 100% Factory Tested for Leakage Technical Data Maximum Operating Pressure @ 100º F Brass and Stainless: 1000 Psig (68.9 Bar) Stem Taper: 3 Degree (included angle) Stem Pitch: 40 Threads per inch Orifice: 0.055” (1.4 mm) Flow Coefficient (Cv): 0.04 Panel Mounting Panel Mount Hole: 9/16” (14.3 mm) Max Panel Mount Thickness: 1/8" (3.3 mm) Factory Preset for zero flow at positive stop with 150 Psig (10.34 Bar) Temperature Range: Seal Dependent (See How To Order) Materials of Construction Valve Body Material Component Brass Body Bonnet Stem Forged Brass, ASTM 377 Brass, ASTM B16, Nickel Plated Stainless Steel Forged 316 SS, ASTM A182 316 SS, ASTM A479 Brass, ASTM B16, Nickel Plated Seat Insert Acetal CoPolymer, ASTM D4181 Buna-N, Neoprene, ® Ethylene Propylene or Viton 18-8 SS, ASTM A182 Nickel Plating per ASTM B689 ® Stem Threads and O-Rings are lubricated with Krytox

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Precision Metering Valve (PMV)-2

PRECISION METERING VALVE Dimensional Data Dimensions in inches (mm) OAL Panel To Height Knob "A" C/L "B" "C" Diameter Inlet Outlet Configuration 2.07 2.10 PMV-2T 1/8" Tube (52.58) (53.34) Straight 2.31 2.10 PMV-4T 1/4" Tube (58.70) (53.34) 1.43 2.75 PMV-2TA 1/8" Tube (36.20) (69.72) Angle 1.53 2.89 PMV-4TA 1/4" Tube (38.74) (73.30) 1.63 2.10 PMV-2F Straight (41.28) (53.34) 1/8" Female NPT 0.055 .62 0.50 1.19 2.50 PMV-2FA Angle (1.4) (15.75) (12.7) (30.15) (63.50) 1.43 2.53 PMV-2PTA 1/8" Male NPT 1/8" Tube Angle (36.20) (64.14) 1.63 2.10 PMV-2P Straight (41.28) (53.34) 1/8" Male NPT 1.19 2.53...

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