
Check Valve
RV Series
Specifications
- Sizes to 2″
- Carbon Steel Body, Zinc Plated
- Working Pressure to 7250 PSI (500 bar)
- Metal to Metal Seat
Options
- NPT or SAE
- Two Spring Cracking Pressures – 7 PSI (0.5 bar) or 65 PSI (4.5 bar)
- Special Spring Cracking Pressures Available On Request
- Stainless Steel Construction
Nominal Size | DN in (mm) | Port G | Operating Pressure PSI (Bar) | D in (mm) | L in (mm) | Weight lbs (kg) |
![]() | |
NPT | SAE | |||||||
RV8 | 0.31 (8) | 1/4″ | 7/16″ – 20 | 7250 (500) | 0.98 (25) | 2.17 (55) | 0.44 (0.2) | |
RV10 | 0.39 (10) | 3/8″ | 9/16″ – 18 | 7250 (500) | 1.18 (30) | 2.56 (65) | 0.88 (0.4) | |
RV12 | 0.47 (12) | 1/2″ | 3/4″ – 16 | 7250 (500) | 1.38 (35) | 2.87 (73) | 1.54 (0.7) | |
RV16 | 0.63 (16) | 3/4″ | 1-1/16″ – 12 | 7250 (500) | 1.77 (45) | 3.46 (88) | 2.64 (1.2) | |
RV20 | 0.79 (20) | 1″ | 1-5/16″ – 12 | 7250 (500) | 1.97 (50) | 5.00 (127) | 4.4 (2.0) | |
RV25 | 0.98 (25) | 1-1/4″ | 1-5/8″ – 12 | 5800 (400) | 2.36 (60) | 5.63 (143) | 7.26 (3.3) | |
RV30 | 1.18 (30) | 1-1/2″ | 1-7/8″ – 12 | 4500 (315) | 2.75 (70) | 5.63 (143) | 9.24 (4.2) | |
RV40 | 1.57 (40) | 2″ | 2-1/2″ – 12 | 4500 (315) | 3.54 (90) | 6.49 (165) | 15.84 (7.2) |

Medium Duty (5000 PSI)
RVM Series
Specifications
- Sizes to 3/4″ NPT
- Carbon Steel Body, Zinc Plated
- Working Pressure to 5000 PSI (350 bar)
- Metal to Metal Seat
Options
- Field replaceable springs available with 30 PSI or 60 PSI settings
Part Number | A Length in (mm) | B Width in (mm) | C Port Diameter NPT | D Thread Depth in (mm) | Operating Pressure PSI (Bar) | Weight lbs (kg) |
![]() |
RVM8-7N | 2.48 (63.0) | 0.87 (22) | 1/4″ NPT | 0.49 (12.5) | 5000 (350) | 0.44 (0.2) | |
RVM10-7N | 2.71 (69.0) | 1.06 (27) | 3/8″ NPT | 0.49 (12.5) | 5000 (350) | 0.88 (0.4) | |
RVM12-7N | 3.17 (80.5) | 1.26 (32) | 1/2″ NPT | 0.61 (15.5) | 5000 (350) | 1.54 (0.7) | |
RVM16-7N | 3.92 (99.5) | 1.42 (36) | 3/4″ NPT | 0.67 (17.0) | 5000 (350) | 2.64 (1.2) |

Needle Valve
NDV Series
Specifications
- Sizes to 11/2″
- Carbon Steel Body, Zinc Plated
- Viton “O”-Ring
- Temperature Range: 14°F – 212°F (-10°C – 100°C)
- Working Pressure to 5000 PSI (350 bar)
- Graduated Knob and Color Coded Spindle To Accurately Control Flow
- Set-Screw Located On Side Of Knob To Lock Valve In Position
Options
- NPT or SAE Threaded Connection
- Panel Mounting Kit Available
- Special Seals Available On Request
- Stainless Steel Construction

Medium Duty (5000 PSI)
NVH Series
Specifications
- Sizes to 1/4″, 3/8″ and 1/2″ NPT, SAE
- Working Pressure 5000 PSI (350 bar)
- Nickel Plated Carbon Steel Body, Stainless Steel Needle
- Flow Setting Can Be Locked With Handle Set Screw
- Stem Seal-Buna with PTFE Back Up Ring
- Temperature range: -30°F to 250°F (-34°C to 121°C)
Options
- VITON Seals
- Panel Mount Lock Nut
- BSP Ports Available

Flow Control Valves
NDRV Series
Specifications
- Sizes to 2″
- Carbon Steel Body, Zinc Plated
- 7 PSI Standard Spring Setting
- Viton O-Ring
- Temperature Range: 14°F – 212°F (-10°C – 100°C)
- Working Pressure to 5000 PSI (350 bar)
- Graduated Knob and Color Coded Spindle To Accurately Control Flow
- Set-Screw Located On Side Of Knob To Lock Valve In Position
Options
- NPT or SAE Threaded Connection
- Panel Mounting Kit Available
- Special Seals Available Upon Request
- Special Spring Settings Upon Request
- Stainless Steel Construction

Flow Control Valves – Medium Duty (5000 PSI)
FCH Series
Specifications
- Sizes to 1/4″, 3/8″ and 1/2″
- NPT or SAE Threads
- Working Pressure 5000 PSI (350 bar)
- Nickel Plated Carbon Steel Body, Stainless Steel Needle
- Flow Setting Can Be Locked With Handle Set Screw
- Stem Seal-Buna With PTFE Back Up Ring
- Temperature range: -30°F to 250°F (-34°C to 121°C)
Options
- VITON Seals
- Panel Mount Lock Nut
- BSP Ports Available

Pressure Compensated Flow Control Valves
PNDRV Series
Specifications
- Sizes to 1/4″, 3/8″, 1/2″ and 3/4″ NPT
- Working Pressure 3000 PSI (200 bar)
- Carbon Steel Body, Stainless Steel Internal Components
- Stem Seal-Buna With PTFE Back Up Ring
- Temperature range: -30°F to 250°F (-34°C to 121°C)
Options
- VITON Seals
- Panel Mount Lock Nut

Needle Valves – Medium Pressure
NVM Series
Specifications
- Sizes to 1/4″, 3/8″ and 1/2″ NPT, SAE, and BSP
- Working Pressure 3000 PSI (200 bar)
- Nickel Plated Brass Body, Stainless Steel Needle
- Flow Setting Can Be Locked With Handle Set Screw
- Stem Seal-Buna with PTFE Back Up Ring
- Temperature range: -30°F to 250°F (-34°C to 121°C)
Options
- VITON Seals
- Panel Mount Lock Nut

Flow Control Valves – Medium Pressure
FCM Series
Specifications
- Sizes to 1/4″, 3/8″ and 1/2″
- NPT or BSP Threads
- Working Pressure 3000 PSI (200 bar)
- Nickel Plated Brass Body, Stainless Steel Needle
- Flow Setting Can Be Locked With Handle Set Screw
- Stem Seal-Buna With PTFE Back Up Ring
- Temperature Range: -30°F to 250°F (-34°C to 121°C)
Options
- VITON Seals
- Panel Mount Lock Nut

Panel Mounting Kits – Flow Control & Needle Valve
Gauge Isolator Valves
SWS Series
Specifications
- Working Pressure 5800 PSI (390 bar)
- VITON Seals
- NPT, BSP and SAE Ports
- Temperature Range: Style S1 and M: -30°F – 240°F (-22°C – 115°C)
- Protects Gauges From Pressure Surges
- Steel Body
- Tank Drain Port
Options
- Single Station – S1 Series
- Multi Station – M Series

Gauge Isolator Needle Valves
SWS Series
Specifications
- Sizes 1/4″ NPT
- Working Pressure 6000 PSI (400 bar)
- Nickel Plated brass Body
- Stem Seal-Buna With PTFE Back Up Ring
Options
- In line or 90° Style
- NPT/SAE Version
- Panel Mount Lock Nut