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SPX STONE 1 GAL ROUND STEEL RESERVOIR 6.

Description & Features

The SPX FLOW US LLC AC/DC HPU component is expertly crafted for advanced hydraulic applications. The Stone Pick-A-Pack range rooted in a modular construction system continues to offer flexibility with high-quality materials and advanced manufacturing technologies.

This 1-gallon round steel reservoir comes with integrated valve kits featuring four color-coded relief springs: Blue (300-599 PSI) Green (600-1299 PSI) Red (1300-1999 PSI) and Black (2000-4199 PSI). The reservoir also includes a mounting foot for capacities of 1.5 gallons and larger ensuring stability and ease of installation.

The AC motors deliver continuous duty operation but must be used within the rated kilowatts and with full voltage. For hydraulic systems with pump flows exceeding 3 GPM a larger suction strainer (part number 1413-AA) is recommended.

The current endhead design accommodates both imperial and metric mounting bolts and washers fostering compatibility with a wide range of hydraulic systems. This versatile endhead available with NPTF SAE or G3/8 porting serves as the foundational element in this interchangeable system.

Supplier Part Number: KR40

Specifications

Brand Power Team®	For Use With Hydraulic Power Units	grp Motor AC Motors are Continuous Duty but Cannot be Used Above Their Rated Kilowatts, Regardless of Duty Cycle and Must Have Full Voltage to Achieve Rated Kilowatts	grp Plumbing Kits Used Larger Suction Strainer, Part Number 1413-AA for Pump Flows over 3 gpm	grp Pumps Current Endhead Design Uses 5/16-24 Mounting Thread, Older Endhead Design Used M8 Mounting Thread, Pump Kits Include Both Imperial and Metric Mounting Bolts and Washers, Mounting Bolts are Grade 5, Do not Substitute	grp Reservoirs Mounting Foot Included on 1.5 gal and Larger Reservoirs	Material Steel	Specifications 1 gal Nominal Capacity, 100 cu-in Vertical Useable Oil, 170 cu-in Horizontal Useable Oil

Similar Products

Model Number	Material	Specifications
KR42 AC/DC HPU Component	Steel	2 gal Nominal Capacity, 340 cu-in Vertical Useable Oil, 360 cu-in Horizontal Useable Oil
KR14	Steel	0.75 gal Nominal Capacity, 138 cu-in Vertical Useable Oil, 135 cu-in Horizontal Useable Oil
KR15	Steel	1 gal Nominal Capacity, 165 cu-in Vertical Useable Oil, 161 cu-in Horizontal Useable Oil
KR24	Plastic	0.75 gal Nominal Capacity, 138 cu-in Vertical Useable Oil, 130 cu-in Horizontal Useable Oil
KR41	Steel	1.5 gal Nominal Capacity, 220 cu-in Vertical Useable Oil, 270 cu-in Horizontal Useable Oil
KR43	Steel	3 gal Nominal Capacity, 520 cu-in Vertical Useable Oil, 500 cu-in Horizontal Useable Oil
KR46	Steel	2.5 gal Nominal Capacity, 380 cu-in Vertical Useable Oil, 390 cu-in Horizontal Useable Oil
KR50	Plastic	1 gal Nominal Capacity, 120 cu-in Vertical Useable Oil, 187 cu-in Horizontal Useable Oil
KR52	Plastic	2 gal Nominal Capacity, 340 cu-in Vertical Useable Oil, 345 cu-in Horizontal Useable Oil
KR53	Plastic	3 gal Nominal Capacity, 620 cu-in Vertical Useable Oil, 540 cu-in Horizontal Useable Oil
KR54	Plastic	4 gal Nominal Capacity, 860 cu-in Vertical Useable Oil, 715 cu-in Horizontal Useable Oil
KR71	Steel	4 gal Nominal Capacity, 1250 cu-in Vertical Useable Oil
KR72	Steel	Self-Manufactured Steel Reservoirs
KR73	Steel	14 gal Nominal Capacity, 3000 cu-in Vertical Useable Oil

Product Questions & Answers (4)

Question by: Lynn M on Feb 3, 2026, 6:24 PM

does this reservoir come with a mounting foot, or is that something i'd have to track down separate?

Answer by: Customer Support on Feb 5, 2026, 6:17 AM

Mounting feet are included on the 1.5 gallon and larger reservoirs in this product line. At one gallon, this particular unit does not include a mounting foot. If your setup requires one, you'd need to source it separately.

Question by: Glen E on Apr 3, 2025, 6:54 PM

Will this reservoir fit on my Stone Pick-A-Pack unit?

Answer by: Customer Support on Apr 5, 2025, 2:09 PM

This reservoir is designed as part of the Stone Pick-A-Pack system, so it should fit if you're already using that setup. Just make sure the 1-gallon size meets your needs.

Question by: Hank J on Jul 17, 2025, 12:10 PM

trying to swap reservoirs on a Pick-A-Pack unit, is this the right tank for that modular setup?

Answer by: Customer Support on Jul 18, 2025, 5:42 PM

Built for the Stone Pick-A-Pack modular system, the reservoir is part of a mix and match setup where motors, pumps, reservoirs, and control valving are meant to interchange on the Pick-A-Pack endhead.

Question by: Denise R on Feb 14, 2026, 6:02 PM

got a Stone pick-a-pack setup already, does this KR40 reservoir match that modular endhead deal?

Answer by: Customer Support on Feb 16, 2026, 6:21 AM

Within the Pick A Pack system, the reservoir is meant to be part of a modular, interchangeable build that mates to the “international” endhead. That endhead is the base where the motor, pump, reservoir, and valving get assembled or manifolded together, and it is offered with NPTF, SAE, or G3/8 porting.