delivered the opinion of the court:
The plaintiff, Ronald D. Thomas, brought this suit in the circuit court of De Witt County for personal injuries received when his face was sprayed with liquid-nitrogen fertilizer as he attempted to fill a fertilizer-applicator machine with the liquid. The complaint charged defendants with both negligence and strict products liability for defective design. Defendants are: Kaiser Agricultural Chemicals (Kaiser), seller of the fertilizer, who, in connection with that sale, supplied the applicator machine; and Certified Equipment and Manufacturing Company (Certified), the distributor of the allegedly defective component part that was incorporated into the applicator machine. Certified filed a third-party complaint for indemnity against OPW Corporation, a division of Dover Corporation (Dover), the manufacturer of the component part alleged to be defective. Kaiser counterclaimed, seeking indemnity from both Certified and Dover.
After a jury trial, the court entered judgments on the verdicts (1) in favor of plaintiff and against Kaiser for $50,000, (2) in favor of Certified and against plaintiff, (3) in favor of Certified and against Kaiser for indemnity, and (4) in favor of Kaiser and against Dover for indemnity. The appellate court affirmed the judgment of the circuit court relative to the jury verdicts but reversed the allowance of attorney’s fees, an issue not before us on appeal. (74 Ill. App. 3d 522.) We allowed Dover’s petition for leave to appeal, and Kaiser cross-appeals.
Kaiser claims (1) that the judgment for plaintiff should be reversed because, as a matter of law, the plaintiff assumed the risk of the allegedly defective component part, and (2) that because Certified is a wholesaler in the distributive chain of the allegedly defective product, Kaiser is entitled to indemnity from Certified as a matter of law. Dover contends (1) that, absent a functional failure of a component, the manufacturer of the component is not required to indemnify an assembler who selects and installs the component part in a finished product, and (2) that the trial court erred in its ruling which prevented Dover from introducing evidence to show that it made a companion part which, if used with the allegedly defective component in question, would have avoided the injury to plaintiff.
In April 1974, to fertilize their farms, plaintiff and his brother, Robert Thomas, purchased from Kaiser the stated fertilizer. In connection with this sale and without charge to plaintiff or his brother, Kaiser supplied a fertilizer applicator. The applicator, a 3 0 O-gallon-capacity tank mounted on wheels, is made to be attached to the rear of a tractor that pulls the applicator over the soil while a system of blades deposits the pressurized fertilizer from the tank into the churned ground.
An adaptor, located at the top of the applicator, is a cylindrical device, approximately three inches in length. It is threaded at one end, allowing it to be screwed into and fastened to the top of the applicator tank. At the outer circumference of the other end of the adaptor is a specially designed annular groove to which a supply hose attaches for filling the applicator. This adaptor is the entry point for the fertilizer, which is pumped into the applicator from a larger tank-storage unit called a “nurse tank.” The hose from the nurse tank is specially fitted with a coupler which clamps onto the upper end of the adaptor at the annular groove and is locked on with two attached arm clamps called “kamlocks.” Once the hose coupler is attached to the adaptor and clamped with the kamlocks to prevent any leakage, air pressure is applied to the nurse tank to force the fertilizer to flow into and fill the applicator tank.
The adaptor contains a check valve which blocks the threaded lower end of the adaptor to prevent the fertilizer from being expelled from the applicator. The check valve can be opened by depressing a stem attached to the check valve. This stem extends approximately one-eighth inch above the upper lip of the adaptor. The check valve also can be forced open by the pressurized flow of fertilizer from the nurse-tank hose.
In addition to the adaptor, an air-pressure-relief valve and an air-pressure gauge are located on the top of the tank alongside a decal listing instructions for the use of the applicator. One of the listed instructions directs the user, before attempting to fill the applicator, to bleed all the air from the applicator tank until the pressure gauge reads zero.
At trial, the plaintiff testified that, although he had been farming for 18 years, he had used the Kaiser applicator only once before — in 1966. Plaintiff stated that he had generally used anhydrous-ammonia fertilizer and was not, as a user, familiar with the harmful properties of liquid-nitrogen fertilizer. He stated that both he and his brother had read the decal instructions pertaining to the filling of the applicator before the April 24, 1974, accident occurred. On that date, plaintiff and his brother worked together in applying the fertilizer to their land. Plaintiff testified that, in preparation for refilling the applicator tank, he bled off the tank’s air pressure and heard the hissing sound of released air. He did not check the air-pressure gauge to see if it read zero. Plaintiff took the hose leading from the nurse tank and attempted to attach the hose coupler to the adaptor in preparation for filling. He testified that he did not know that the stem on the check valve protruded above the lip of the adaptor where the hose coupler was to be attached. Plaintiff stated:
“As I approached the adaptor with the coupler I didn’t get it on there correctly and in a second or less than that I got sprayed in the face with the liquid fertilizer. *** I apparently bumped the check valve.”
The testimony of plaintiff’s brother was substantially the same, except that he claimed to have bled the air pressure from the applicator immediately before the accident occurred.
Plaintiff’s expert witness, Professor Loren Body of the University of Illinois department of agricultural engineering, testified that, in his opinion, the injury occurred because a quantity of liquid-nitrogen fertilizer was trapped by the check valve and remained above it in the cup of the adaptor after the prior filling operation. When, in an attempt to attach the hose coupling, plaintiff accidentally bumped the protruding stem of the check valve, the check valve opened, allowing pressure to be released from the tank and ejecting the fertilizer trapped in the adaptor. In Professor Body’s opinion, the one-eighth inch protrusion of the valve-core stem created an unreasonably dangerous condition.
The evidence presented at trial revealed that the applicator was assembled by Kaiser. The parts, including the adaptor in question, were purchased by Kaiser from Certified, which was the distributor for the manufacturer, Dover. There was no evidence to show that Certified made any recommendation or advised Kaiser as to what component parts to purchase.
Dover’s manager of engineering testified that he was aware that some of Dover’s customers used liquid-nitrogen fertilizer and that the adaptor had been used in the fertilizer business for over 20 years.
We first address Kaiser’s contention that the plaintiff, as a matter of law, assumed the risk of the allegedly defective adaptor.
In Williams v. Brown Manufacturing Co. (1970), 45 Ill. 2d 418, this court established the rule that a plaintiff’s contributory negligence is not a defense in a strict products liability tort action. If, however, the plaintiff’s action amounts to an assumption of the risk, recovery for any injury incurred will be barred. A plaintiff assumes the risk of a defective product only if he is actually aware of the defective nature of the product and appreciates its unreasonably dangerous character, but chooses voluntarily to act in disregard of such known danger. Williams v. Brown Manufacturing Co. (1970), 45 Ill. 2d 418, 426, 430; Court v. Grzelinski (1978), 72 Ill. 2d 141, 149; Restatement (Second) of Torts, sec. 496D (1965).
The test for assumption of risk, established in Williams, is a subjective one which allows the jury to consider the individual plaintiff’s knowledge, experience and background in determining whether he has assumed the risk of using a product known by him to be dangerous. This determination is normally a jury question. Kaiser claims that, since this plaintiff had been farming for 18 years and had used fertilizer machinery on his farm and on the farms of his neighbors, he should be held as a matter of law to have assumed the risk in this case.
Plaintiff testified, however, that he had used Kaiser’s machinery only once before, eight years prior to the instant accident. His previous experience had been with anhydrous-ammonia fertilizer which has properties markedly different from those of the liquid nitrogen that caused his injuries. He stated he was not aware that the stem of the adaptor’s check valve protruded or that it was dangerous. Moreover, the plaintiff thought he had released the air pressure within the applicator and that, consequently, it was safe to proceed to fill the applicator. Although the plaintiff may have been negligent in not checking the air-pressure gauge for a “zero reading,” his actions do not indicate a voluntary decision to face a known danger. Under the circumstances, the jury was free to find that plaintiff’s actions did not amount to an assumption of risk.
Kaiser also argues that it was entitled to a judgment for indemnity against Certified as a matter of law because Certified was the distributor who sold the allegedly defective adaptor to Kaiser.
It is true that in a products liability action, all persons in the distributive chain are liable for injuries resulting from a defective product. This includes suppliers, distributors and retailers. (Dunham v. Vaughan & Bushnell Manufacturing Co. (1969), 42 Ill. 2d 339, 344. See Suvada v. White Motor Co. (1965), 32 Ill. 2d 612, 617.) However, in the present case, the following instruction, tendered by Kaiser, was submitted to the jury:
“If you find that Kaiser Agricultural Chemicals is entitled to reimbursement from one of Certified Equipment and Manufacturing and OPW Corp., A division of Dover Corp., but not both, then you should use the form of verdict which says:
‘We, the Jury, find for Kaiser Agricultural Chemicals and against the following defendant__________.
We further find for___________and against Kaiser Agricultural Chemicals. ”
Where, as here, the record shows that a defendant’s tendered instruction was given to the jury and that an option within that instruction provided the verdict form by which the jury could find for one of the defendants but against another, the tendering defendant has waived any error when the jury exercises that option. (Tweedy v. Wright Ford Sales, Inc. (1976), 64 Ill. 2d 570, 575.) Accordingly, Kaiser cannot now claim error because the jury used the verdict form supplied by Kaiser to find for Certified and against Kaiser on 'the issue of indemnification.
Dover argues that it should not be liable to Kaiser for indemnification as a matter of law. Dover’s theory is that the manufacturer of a component part, incorporated into a machine by an assembler, would not be liable to a user of that machine if the injury was not the result of a functional failure of that component part. Dover asserts that Kaiser was aware of the applicator’s design characteristics and that the component part chosen by Kaiser was unsuitable for the purpose used. Dover concludes that Kaiser should therefore bear the sole burden of liability.
Section 402A of the Restatement (Second) of Torts, comment q, states:
“It is no doubt to be expected that where there is no change in the component part itself, but it is merely incorporated into something larger, the strict liability will be found to carry through to the ultimate user or consumer.” (Restatement (Second) of Torts section 402A, comment q (1965).)
This position was adopted in this State in Suvada v. White Motor Co. (1965), 32 Ill. 2d 612, wherein the court found that the manufacturer of a component part may be held liable where the assembler made no substantial change in the component part and the injury is directly attributable to a defect in such component part. Suvada v. White Motor Co. (1965), 32 Ill. 2d 612, 623.
Dover’s argument, that it should be relieved of liability, presumes that the adaptor in question was not defective at the time it left Dover. However, plaintiff’s expert, Professor Body, testified that in his opinion the adaptor itself created an unreasonably dangerous condition because of the ease with which the valve’s protruding stem could be bumped with a resultant expulsion of pressurized liquid. There was no evidence to show that any change was made to the adaptor by Kaiser. Kaiser simply attached the adaptor to the top of its tank. We therefore find no merit to Dover’s argument that Kaiser should bear the burden of liability for plaintiff’s injuries. The jury was entitled to find that the dangerous condition which led to plaintiff’s injuries existed at the time the adaptor was manufactured by Dover. We find no reason to make a distinction in regard to liability between component-part manufacturers whose project malfunctions and those manufacturers whose product is faulty because of a design defect.
Dover further argues that Kaiser’s use of the adaptor on its applicator amounted to misuse of the product. It claims that such adaptor was unsuitable for the use to which it was put and that Kaiser was aware of the design characteristics of the adaptor at the time Kaiser selected it. Generally, the misuse of a product by a supplier will defeat his right of indemnification from the manufacturer. However, if such misuse is reasonably foreseeable by the reasonably prudent manufacturer, it will not act to bar the liability of the manufacturer. (Kerns v. Engelke (1979), 76 Ill. 2d 154, 165; Anderson v. Hyster Co. (1979), 74 Ill. 2d 364, 369; Liberty Mutual Insurance Co. v. Williams Machine & Tool Co. (1975), 62 Ill. 2d 77, 83.) When there is conflicting testimony as to whether a particular use was reasonably foreseeable, it is a question for the jury. Anderson v. Hyster Co. (1979), 74 Ill. 2d 364, 369.
In the present case, Dover’s manager of engineering stated that he was aware that some of Dover’s customers used liquid-nitrogen fertilizer and that the adaptor had been used in the fertilizer business for 20 years. Although Dover argues that it was not aware of Kaiser’s use of its adaptor, the testimony adduced at trial was sufficient to support the jury’s finding that the use of Dover’s adaptor in the manner described here was reasonably foreseeable.
Dover also argues that the trial court erred in excluding evidence that would show the adaptor could have been used in conjunction with another part manufactured by Dover. Dover claims that if Kaiser had selected a different hose coupler to use in conjunction with the adaptor, it would have prevented the accumulation of liquid fertilizer in the adapter cup and, thus, have avoided the instant accident.
Dover made an offer of proof which showed that the hose coupler actually used by the plaintiff and the coupler sought to be introduced by Dover were part of a line of products specially designed to be used interchangeably with Dover’s various models of adaptors, including the one in question here. Since the focus of the issue in this case is the design of the adaptor itself, evidence of other products which could have offset the defective design of the adaptor is irrelevant. Dover could be held to have foreseen that the adaptor would be used with the various types of couplers and it had a duty to design the adaptor so that it would function safely with each. Further, if this particular adaptor and coupler could not have been safely used together, a warning to that effect should have been provided. We, therefore, hold that the trial court did not err by excluding this evidence.
For the reasons stated above, the judgment of the appellate court is affirmed.
Judgment affirmed.