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The ShearFlo® KR-12 pressure regulator ensures high cycle life, negligible internal leakage and contaminant resistant operation for 1/2” piping. Its modular design allows for various operator and porting options with supply pressures to 6000 psi and regulated outlet pressures ranging from 50 to 6000 psi.

PacSeal Hydraulics’ pressure regulators have become the industry standard for oil and gas BOP control systems because of their reliability, accuracy, and long-life robustness in corrosive and critical service conditions. Maintaining hydraulic system pressure at a set value is vital for all downstream components and functions. Strict inspection and testing requirements and 100% American-made components ensure quality and reliability that cannot be found anywhere else.


Supply Port Size 1/2 in. NPT or SAE ORB
Outlet Port Size 1/2 in. NPT or SAE ORB
Vent Port Size 1/2 in. NPT or SAE ORB
Working Pressure Options (Liquid) 3000, 5000 or 6000 psi
Regulated Outlet Pressure Options See Product Configurator
Cv Factor Outlet .23
Cv Factor Vent .23
Rated Flow 2 GPM
Temperature Rating (Regulators and Failsafe Motors) -40° to 250°F
Weight See Installation Drawings
Fluid Media Hydraulic Oil or Lubricated Water1
ShearFlo Sealing Components Hardened Stainless Steel1
Body Carbon Steel
Flanges and Operators Carbon Steel
Hardware Coated Carbon Steel
O-rings Buna-N, Viton, or EPR
Backup Rings Teflon
1For water-based media, special alloy seal rings may be required for optimum performance and durability. Contact PacSeal Hydraulics at (714) 529-9495 for details.

Model Configurator and Ordering Instructions

Use the below configurator to create a model number for a KR-12 Pressure Regulator (i.e. KR-12 with NPT ports, 3000 psi supply pressure, “L” regulated outlet pressure, and Manual handle is KR-12N3LM). Simply call PacSeal or use our Request a Quote tool to receive pricing.

Detailed information regarding each option is shown in KR-12 Pressure Regulator Specifications.

For repair kits and other accessories, see links below.


*Common Part Numbers for Reference
Part No. Basic Description Model No.
40-1498 NPT Ports, 3000 psi Inlet, 250-1800 psi Outlet, Manual Operator KR-12N3LM
40-2449 SAE Ports, 3000 psi Inlet, 250-1800 psi Outlet, Manual Operator KR-12S3LM
40-1663 NPT Ports, 5000 psi Inlet, 300-3800 psi Outlet, Manual Operator KR-12N5HM
*Note: These part numbers are the most commonly purchased and are displayed for reference only. Other models may be configured as requested.

PacSeal Hydraulics

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