Allegations that Reagan campaign staff members used sexual favors in 1980 to obtain documents from the Carter White House are false, according to Wayne H. Valis, a Reagan volunteer, who said yesterday that he strongly resents discussions on Capitol Hill of what he described as "ugly innuendo."

"I have no knowledge of any Reagan aides sleeping with Carter women to get information. If anyone says I do, it's preposterous," said Valis, who provided news clippings and other research on President Carter to David R. Gergen and other senior officials in Reagan's 1980 campaign.

In a widely publicized Oct. 21, 1980, memo to Gergen, now White House communications director, Valis passed on information purportedly discussed at a Carter staff meeting on preparations for the televised Oct. 28 Reagan-Carter debate.

Valis wrote that the information came "from a source intimately connected to a Carter debate staff member. Reliable . . . . "

Valis met yesterday with House subcommittee investigators and has been interviewed by the FBI, both at his request. He described the subcommittee meeting as fair and constructive.

He said this is an effort to dispel the notion that he has firsthand knowledge that the Reagan camp used sexual relationships to obtain Carter debate briefing documents and other material.

"There were relations between Carter and Reagan people but not to get information," Valis said. " . . . To suggest there was some kind of 'ring' is opera bouffe. It's laughable."

In other developments as the FBI and the House Post Office and Civil Service human resources subcommittee, headed by Rep. Donald J. Albosta (D-Mich.), continued investigations into how various Carter documents made their way into the Reagan campaign:

Former national security affairs adviser Richard V. Allen told the subcommittee the name of the person he says provided him with excerpts of Carter National Security Council staff reports in 1980, reliable sources said.

According to these sources, Allen told the panel that he received the excerpts from Jerry D. Jennings, an NSC security officer under Carter. Allen has called the excerpts "innocuous."

Jennings, now executive director of the White House Office of Science and Technology Policy, told The Washington Post, "Any such suggestion is untrue and absolutely ludicrous."

The sources said that Allen did not know directly who had provided the material but that he recalled being told by another person that it had come from Jennings. Investigators are looking further into the matter for any written proof that might corroborate Allen's account.

In 1981, Jennings reported discovery in Allen's office safe of $1,000 in cash from Japanese journalists who had interviewed Nancy Reagan. This was among events that led to Allen's resignation.

Subcommittee investigators made plans to talk to Daniel Jones, another Reagan volunteer who provided top campaign officials with information and documents from the Carter White House that he described as coming from a "reliable White House mole."

The Carter White House memos, some of which were published by The Washington Post yesterday, and information included the president's travel itinerary for the final week of the 1980 campaign and memos on economic policy written by top Carter aides Anne Wexler, Alonzo L. McDonald, James T. McIntyre Jr. and Charles L. Schultze. One covering memo from Jones was addressed to Reagan campaign officials "Bob Gray, Bill Casey, Ed Meese."

Jones' attorney, George Foote, said his client voluntarily contacted the subcommittee and has been interviewed by the FBI at his own request.

The White House tried to play down the papers question, and reporters were kept away from President Reagan, even during routine events at which photographers generally are permitted. Spokesman Larry Speakes said that "nobody in particular" has been briefing Reagan on the controversy and that "we're not as possessed as you seem to think we are by this thing."

On Wednesday, Albosta said he was looking into "unconfirmed allegations" that "some love affairs between people in the Carter administration and people in the Reagan campaign" may have been connected to the Reagan camp's receipt of Carter documents.

Valis, who now works here at the Hill & Knowlton public relations firm, said yesterday that he understands that some secondhand accounts to the subcommittee have named him as having information on the supposed love affairs.

"I'm very concerned over discussions in the press of hearsay and unsubstantiated reports and linking my own name to them," Valis said. "I am very, very unhappy over the reports . . . .

"In the course of human events, I've known Republican women who dated Democratic men and vice versa," Valis said. " . . . There were always stories about who the Carter guys were sleeping with. A number of women were identified. There were some women who bragged at times about who their friends were."

Valis said that he once steadily dated a woman career civil servant in the Carter administration but that she had no connection with the campaign and was in no position to provide inside information. He said the woman resigned in 1980 to join the Reagan campaign and now works in the Reagan administration.

Valis said that he compiled hundreds of clippings and other information on Carter while working at the American Enterprise Institute and that, when people asked where he obtained it, "I'd say I got it from the loveliest woman in the Carter White House, or that I got it from a gorgeous brunette over there . . . . It was funny at the time. It may not sound so funny now."

Valis said reporters have called him and asked such questions as, "Is it true that I slept with Carter White House aides to get information? . . . . Did I sleep with various Carter White House women? They give me a choice: A,B,C,D,E,F. The answer is: 'None of the above.' "

Valis said he had no official title in Reagan's 1980 campaign, but recruited volunteers, sent newspapers letters critical of Carter and handled "little odds and ends."

He said that, when he was director of negative research for President Ford's 1976 campaign, people brought him unsubstantiated personal allegations about Carter, which he refused to use.

"Now, seven years later, people are tossing little mudballs at me, and there's no way I can respond," he said.