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SD16 Series Walvoil Inlet Cover SD16 (FE SD16/AC(XG-

Description & Features

WALVOIL FLUID POWER CORP. offers the SD16 Series Walvoil Inlet Cover SD16 (FE SD16/AC(XG- with a heavy-duty, compact sectional valve design accommodating 1 to 12 sections for open and closed center hydraulic systems. Each section features a main pressure relief valve and load check valve, ensuring reliable performance.

The valve supports flow ratings up to 37 GPM and features internal leakage of 0.18 insup3;/min at 1450 PSI differential pressure. Its operational versatility is enhanced with options for manual, pneumatic, hydraulic, electro-hydraulic, or cable controls.

Engineered to withstand ambient temperatures ranging from -40deg;F to 140deg;F, this valve also accommodates fluid temperatures between -4deg;F and 176deg;F with standard Buna-N seals. It functions effectively with fluid viscosities from 80 to 400 SSU, and up to 1950 SSU maximum.

Additional features include a maximum operating pressure of 4600 PSI for parallel or tandem circuits and 3050 PSI for series circuits, supported by a maximum back pressure of 360 PSI on the outlet port T. The product also includes ISO 4406 19/16 recommended filtration.

Supplier Part Number: 618205004

MPN: 618205004

Specifications

Brand Walvoil Fluid Power Corp.	Brand Walvoil Fluid Power	Pack Size 1.00	UOM EA	Key (1)	Supplier Part Number 618205004	Alternate Part Numbers Alternate Part Number C1KK62	Product Weight 10.00 lbs

Similar Products

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618205001 SD16 Series Valve Inlet Cover	(1)	WALVOIL SD16 INLET COVER SDS180/AC (YG3-.
618205004 SD16 Series Valve Inlet Cover	(1)	WALVOIL INLET COVER SD16 (FE SD16/AC(XG-.

Product Questions & Answers (3)

Question by: Tammy M on Jan 17, 2026, 10:31 AM

what's the fluid temperature range on this inlet cover? running standard buna-n seals and want to make sure we're good before we swap it in

Answer by: Customer Support on Jan 18, 2026, 11:47 AM

With the standard Buna-N seals, fluid temperature needs to stay between -4°F and 176°F. As long as your system runs inside that window, you're good to go. If you're seeing temps outside that range on a regular basis, you'd want to look at a different seal option, but for most mineral oil setups running at normal operating temps, these seals hold up fine.

Question by: Darryl W on May 11, 2025, 4:36 PM

what's the max pressure this thing'll handle running a parallel circuit setup?

Answer by: Customer Support on May 12, 2025, 4:52 PM

For parallel or tandem circuit configurations, the SD16 handles up to 4600 PSI. If you're running a series circuit instead, that ceiling drops to 3050 PSI. Worth knowing before you spec it in, since the difference is significant depending on how your system is laid out.

Question by: Norm B on Apr 5, 2025, 9:13 PM

What kind of hydraulic systems will this inlet cover work with?

Answer by: Customer Support on Apr 7, 2025, 10:45 AM

This inlet cover is made for both open and closed center hydraulic systems, so it should fit a pretty wide range of setups.