KR Failsafe Air (KRFSA) High Output Actuator

KR Failsafe Hydraulic (KRFSH) High Output Actuator

KR PRESSURE REGULATOR ACCESSORIES AND REPAIR KITS

PacSeal Hydraulics offers various accessories for all KR pressure regulators to improve the value and performance of a hydraulic control system. For remote operations, see our failsafe actuators. To improve the deadband for higher-regulated outlet pressures, see our high-pressure low deadband adjustment head. To reduce your hydraulic control system footprint and overall costs, see our internal override bypass options.

PacSeal also provides tamper-proof kits to ensure that only qualified personnel can adjust the regulator setting.

PacSeal understands that nothing lasts forever, which is why we provide OEM repair kits and maintenance instructions for all of our pressure regulators.

KR Accessories

Failsafe Actuators

Failsafe actuators provide air or hydraulic remote operation with a manual override. Upon loss of pilot signal, there is no loss of regulated outlet pressure.

Purchase as an actuator assembly using the stated below Part No. or as assembled to a regulator by specifying the operator type as “FSA” (air) or “FSH” (hydraulic) in the respective model number configurator.

If you are a returning customer you may notice new part numbers and fewer options. PacSeal has redesigned all KR (air, hydraulic, etc.) failsafe actuators to be universally operated at all rated pressures while better matching the output pressure of the manual operator. For more detailed information, check out our blog.

Model Description	Part No.	Input Requirements	Regulated Outlet Model Codes
Failsafe Air, Standard	40-3963	80-130 psi air pressure²	L, R, D, V
Failsafe Air, High Output¹	40-4280	80-130 psi air pressure²	H, W
Failsafe Hydraulic	40-4255	1500 psi hydraulic pressure (maximum)	L, R, D, V
Failsafe Hydraulic, High Output¹	40-4284	1500 psi hydraulic pressure (maximum)	H, W

Notes:
¹Required for high-pressure outlet (model H and W)
²Actuator may require greater than 80 psi at high regulated outlet pressures, depending on the age and condition of the motor and the circuit supplying the compressed air.

High-Pressure Output Adjustment Head

This adjustment head yields better precision for higher-pressure operation with the option of a manual or failsafe actuator.
Existing PacSeal Hydraulics KR pressure regulators may be field-retrofitted (“L” and “D” KR’s only) or ordered as assembled to a regulator (model code “H” or “W”).

Part No.	Model Description
40-2927	Adjustment Head Assembly
40-4280	Failsafe Air Actuator
40-4284	Failsafe Hydraulic Actuator
40-3558	Manual Operator
Retrofit/Installation Instructions

Notes: Applicable only to KR-75, -140, -150, and -200 regulators

Model code information when ordered as a regulator assembly

Model	Supply Pressure [psi]	Regulated Outlet Pressure [psi]	Deadband [psi]
H	5000	350 – 3300	85 – 150
W	6000	600 – 5000	150 – 250

Internal Override Bypass

The KR Internal Override (I/O) Bypass Operator* allows full accumulator pressure to be supplied downstream of the regulator without a dedicated 4-way bypass valve in the circuit. This reduces costs, space requirements and circuit piping while enhancing the intelligence of the hydraulic circuit.

The bypass function is accomplished by applying a pilot signal to the I/O operator that is equal to or greater than the accumulator pressure. The pilot pressure forces the piston/seal container assembly to the fully open position where supply pressure flows through the regulator to the output circuit. Relieving the pilot signal allows the regulator to return to the original set pressure.

*Patent pending

Click on blue link to download drawing

Part No.	Model Description
40-3147	Internal Override Remote Pilot Operation
40-3463	Internal Override with manifold mounted pilot valve
40-3561	Internal Override with manifold mounted, remote actuated pilot valve

Tamper Proof Kits

To prevent the regulated output pressure from being changed to a preset value, a KR pressure regulator may be transformed in the field with a tamper-proof conversion kit. To request a quote, specify Part No. 40-3175 with description.

KR Repair Kits

Repair kits are offered for all KR pressure regulators in four different configurations: O-ring Kit, Seal Kit, Minor Repair Kit and Major Repair Kit. The table on the right specifies the contents of each kit. Part numbers for each repair kit may be found below.

For installation instructions and more details, please see the respective regulator’s maintenance instructions.

If your specific repair kit is not listed in the tables below, please contact PacSeal Hydraulics.

Repair Kit Type	Contents
O-ring Kit	O-rings and Back-up Rings
Seal Kit	O-ring Kit, Seal Rings, Springs and Screws
Minor Repair Kit	Seal Kit and Flow Plates
Major Repair Kit	Minor Repair Kit and Seal Container

KR-12 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-1548
Seal Kit	40-1668
Minor Repair Kit	40-1653
Major Repair Kit	40-1547

KR-38 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-1595
Seal Kit	40-1594
Minor Repair Kit	40-1593
Major Repair Kit	40-1592

KR-75 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-1504
Seal Kit	40-1590
Minor Repair Kit	40-1503
Major Repair Kit (R/V models)	40-1566
Major Repair Kit (L/D/H/G Models)	40-1819

KR-100 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-1506
Seal Kit	40-1589
Minor Repair Kit	40-1505
Major Repair Kit	40-1556

KR-140 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-1866
Seal Kit	40-1867
Minor Repair Kit	40-1868
Major Repair Kit (R/V models)	40-1869
Major Repair Kit (L/D/H/G models)	40-1870

KR-150 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-1540
Seal Kit	40-1568
Minor Repair Kit	40-1541
Major Repair Kit	40-1686

KR-200 Repair Kits

Kit Description	Kit Part No.
O-ring Kit	40-2267
Seal Kit	40-2266
Minor Repair Kit	40-2265
Major Repair Kit	40-2264

Documents and Drawings

› KR-12 Maintenance Instructions
› KR-38 Maintenance Instructions
› KR-75 Maintenance Instructions
› KR-100 Maintenance Instructions
› KR-140 Maintenance Instructions
› KR-150 Maintenance Instructions
› KR-200 Maintenance Instructions